afraid im losing weight too fast???

Just make sure you're eating enough.It can be healthy. 1600 seems extremely low for a guy like yourself. Also, make sure if you're exercising to eat a bit more making sure your NET is what MFP suggests (aka your net is supposed to be 1600 and you're at the gym 2 hours, you're probably burning about 800 calories... so you really need to eat 2400 cals for the day to maintain your net).

My only other piece of advice would be to not limit yourself 100%. It sounds like you're on a very strict diet and dramatic change from 2 weeks ago. More important than taking the weight off in the first place is keeping it off. Sometimes when we change things to drastically, it's really hard to sustain that lifestyle in the long run, which is what we want!

i wouldnt worry. your bad diet before will have caused you to retain a lot of water especially if you were already overweight. im only about 118 and i can drop 8 pounds in two weeks. it will level off to 1-3 pounds a week

Everyone loses more than normal in the first couple of weeks, but that is a lot. Following a vegan diet, you are going to have to make SURE that you are getting plenty of protein. If not, some of that weight loss may be muscle and you sure don't want to do that. Muscle burns calories, so end the end, if you lose it you will eventually stop losing weight and be totally unhealthy.

I know it's a pain sometimes, but if you're really not sure, check with your doctor. MFP will give you a healthy goal imho if you let it set your numbers for you.

What you're trying to do is manage a consistent lifestyle, so are you really going to be in the gym 2 hours every day in a year or are you overdoing it now and heading to burnout?

That big bowl of icecream could become a small bowl of low fat frozen yogurt so you don't lose all your treats, and the chips could become popcorn (non-greasy variety).

Right now, you should be doing a somewhat more extreme version of what you'll be doing at maintenance. It depends on your weight when you start and what weight you want to be when you're done, because you have to maintain that. If you're quite heavy to start, it's normal to have a huge loss off the bat, but that does taper off because you've lost excess water and have to lose the fat after that.

Trust me it will slow down. In the beginning I did the same thing.

I think you're doing great!!

If you actually went from a beer and fast food diet to one that is incredibly clean, most of the weight you have lost is due to water accumulation. Your body was in constant dehydration mode because you were eating a high fat, high salt, low water diet. Your body is just welcoming you with arms outstretched!

The first 5-15 pounds should melt off in the first couple of weeks just because you are drinking more water. Osmosis is pretty cool isn't it?

I personally would be careful about burning out though. You have to think about the long term, unless you want all 17 pounds and probably more to come right back and bite you in the tuchass. There are a lot of people that can make a drastic change and stick to it; but, there are even more who fall off the wagon within the first couple of months because the diet they put themselves on was too stringent.
If this is a lifestyle change rather than a quick fix diet, then you should slow down and go into a marathon mode, not a sprint.

The challenge should be how long you can keep the weight off.... not how much you lose.

Try to stick around 1-2 pounds a week for loss. You may need to eat more calories in the coming weeks or eat back all the exercise calories you are logging. Trial and error.
I'm 5'1'' and eat the same amount.. so, keep that in mind.

Keep up the good work!
and keep drinking that water!!!

Others have said it, but lets see if one more version adds anything...

Clearly your "before" situation was a disaster ! You made a decision to change, and that is awesome !

The biggest thing to pay attention to is not the weight, but the sustainability of your new lifestyle. Try to really think of it in those terms. "Can I (realistically) continue to live this lifestyle for years and years to come without feeling like it is constantly demanding willpower ?" Are you craving a huge greasy pizza and forcing yourself to eat brown rice and tofu instead ? If you do feel like you've found something you can be content with for the long term, that's wonderful.

The ultimate diet (and maybe the only successful diet there is) is when you are content and fulfilled with your choice of food, the amount of food you eat, the amount of exercise you get, and are still able to lose excess pounds and/or maintain your target weight.

Sorry if this sounds preachy. I think the reason I felt like writing this (and a few others mentioned similar concerns) is that the change you describe sounds so drastic.

For me, the key to turning my old way of eating/living into a healthier lifestyle has been realizing that I don't *have* to make any painful sacrifices. I love fat, and learned (to my surprise !) that I can still eat a reasonable amount of fat and be healthy. I had no idea how much "empty carbs" were contributing to my weight, so I was able to cut way back on bread, pasta, soda, and fruit juice pretty easily. And even though I was really, really out of shape, I don't like the "no pain, no gain" approach to exercise. So I've taken a very modest approach : I'm taking brisk walks nearly every day and really enjoying it.

The point is, before I started this, I thought I *had* to do something drastic in order to lose weight, so I avoided it. Now that I've started, I've discovered that I can make a few adjustments, not force myself to do anything I don't like, and the weight is coming off "on its own." If this required willpower, I would be so out of here !

Anyway, good luck to you and congratulation on your progress !

when you go from such a drastic change you always lose a lot at first. It will end up evening out later. When i first started to diet back when i was 21 i lost 10 pounds the first week and then 8 the next then after that i started losing a lot less and it ended up averaging 1 to 2 pounds a week, As long as you feel ok you are fine, just dont start off strong and burn out. GREAT loss by the way!!

Also, if you need any yummy vegan recipes, check out my favorite blog: www.theppk.com

Seems to me you're eating too little. For now, I'm sure most of the weight is water weight, as many people have already said.
But I think you should be eating waaay more, like 2,500/day or more depending how active you are. Good luck!

A good way to gauge is this, and I got this from a book written by doctors so i must have some truth to it:
determine your activity level-
20-very active male
15-moderately active male or very active woman
13-inactive male, moderately active women, and people over 55
10-inactive women, repeat dieters, and seriously overweight people

multiply your target weight by whichever Activity factor you are and that will be your calories needed each day.