I dont know what to do

Definitely try to bring up the exercise. High intensity interval training (it can be done on any equipment, even walking) will increase your caloric burn. If you feel weak after doing increased activity for a couple of weeks, then bring up your intake to < 500 below maintenance.

Hrm.. do you really think HIIT is good for someone over 300lbs, and who has only begun exercising?
Did I read the weight wrong?

I recommend that you increase your calories along with your exercise intensity. Keep getting lots of good exercise, but make sure you are breathing hard and sweating for most of it.

Also, do you do strength training as well as walking? Strength training will increase muscle mass, and the more muscle you have the higher your metabolism will be.

omg,, i confess, i do not exercise as much as i ought to. i can explain but it will be like im making excuses. I am trying to add more exercise in now but i confess, i am not where i should be... im sorry... im trhying to focus on the food right now. long story..

That is quite ok for you right now. At your weight, exercise will be very difficult. (no offense), but you are correct in focusing on your food intake at this point. When you do start to exercise, start off just slow to moderate walking. Start off at a comfortable time for you and slowly increase it as you get stronger and lighter.

Probably what has happened is when your dr put you on the water pills, you dropped a lot of water weight quickly then your body leveled out and is kinda resting from that fast loss.
This, and probably eating more than you think you are, is why the weight loss stopped.
How much were you eating to maintain your weight before you started restricting calories?
This number will better determine how many cals you need to eat to lose now.
Some people your size may have been used to eating 3000-5000 cals per day. For them to drop to 2000, they will lose quickly and easily for awhile.
If you have only been eating around 2000 a day, and are sedentary, and possibly diabetic or pre-diabetic, then it will be harder to create a deficit and the weight will come off more slowly.

Many people mistakenly think that people who are considerably overweight, have been eating massive calories. That is not always the case. If you have been slowly gaining over the years, then you may have only been eating slightly more than your TDEE (total calories your body burns every day).

Good job getting a scale and being diligent in measuring and logging. If you continue to better your food choices and watch your calories closely, you will start to see progress. If you don't, then try lowering your calories by 100 and try that for a week or two to see if that helps.

I agree with another poster that you are most likely insulin resistant at least, so increasing protein and getting in healthy fats, while lowering your carbs, should help you as well. A good place to start is 30Pro/30Fat/40Carb, then tweak it from there as you need to.

You can do this. I have a friend on my list who started at over 400 and has lost 200 pounds already. She is also over 50, so it certainly can be done.

Hang in there. Feel free to friend me if you like.

You say you drink about 3 glasses of water a day, what else are you drinking to stay hydrated? I some milk logged in your journal but nothing else (on the days that I looked at it), anything you are drinking (or eating) besides water should be logged into your food diary and the calories should be counted. Are you drinking empty calories? Pop? Juice? Are you drinking coffee or tea? with cream/sugar? I personally would start with getting away from some of the processed food you are eating as there seems to be a lot of them in your food diary....(muffins, bread, pizza, sausage) while they may be "lowfat" and you may are staying within your calories it still seems to be a lot of processed foods. If the scale has stopped moving, it's just time to refine your choices a bit more. Instead of a muffin for breakfast how about a couple of eggs and veggies in an omelet? Instead of the frozen pizza, some grilled chicken breast with veggies? I know that I stay full longer if I eat "real" food rather then the processed stuff. And please, pleaese, please measure and weigh your food. When I first started, I was guestimating but when I started actually measuring my food I realized that my guestimate as to what a cup of cereal looked like was WAY off...

You also need to commit to exercise, aim for 30 mins a day at least 4 days a week. If at first you can't do all 30 mins at one time then break it down into small chunks that you can manage and do it faithfully, you will slowly build up to where you can do the 30 mins at one time. If you really want to get to your goal, you have to move to burn calories. Try different things until you find an exercise you can tolerate. Swim laps, walk around the block, walk at the mall, exercise tapes, find something you can tolerate and commit to doing it faithfully.

If I read your original posting right you lost 28lbs in the first month, that's 7 lbs a week, that's a lot of weight, really fast; you can't expect to maintain that fast of a weight lost, long term. It wouldn't be healthy and it's not realisitic. This is a marathon, not a sprint. Eat more real foods, drink way more water, and move and the scale will start moving...