How long will it take me to lose 10 pounds?

Way too many variables to give an exact date. Even MFP's projection is just an estimated guess at best. It doesn't take things like BMI, genes and stress into account. Like the poster said above, you should shoot for 1-1.5 pounds a week. The most important thing is to log every meal.

Since you don't have much to lose trying to lose 1 or 2 lbs a week isn't highly likely once you lose water weight. And all losing depends on the person. Hopefully you are eating back exercise calories, because 1200 a day is really low, and MFP is actually set up to have you eat back your exercise calories.
@BetterKimmer, when you lose weight you lose muscle as well as fat. Always, because you are at a calorie deficient.

OP: Pretty much best advice ever. http://www.myfitnesspal.com/topics/show/1080242-a-guide-to-get-you-started-on-your-path-to-sexypants?hl=guide+to+sexypants

Yes, you should always eat back exercise calories...you should also introduce weight training to avoid muscle loss with all that running. With as little as you have to lose, I wouldn't push it further than trying to lose 1/2-1lb per week.

You're better off going at it slower, so it stays off. I only have 15 more to lose and I'm going to be happy if I lose 1/2 to 1lb. a week because I don't have much to lose. The less you have to lose, the longer it takes. I'm 5'4 (but large framed), and losing more than a 1lb. a week right now isn't advisable.

Thanks for the help!
It's not so much my weight I'm worried about, I don't mind gaining a little muscle mass, but I just really want to get rid of the extra fat I have on my stomach and thighs. Right now, I'd consider my weekly excersise as sedentary. I walk home from school 4 days a week (30mins, my pedometer says I burn 120 calories) and I have private softball pitching lessons once a week. I will be investing in a treadmill sometime this month though.

And should I be eating calories back when I do excersise so that my net is 1200?

Despite the way the MFP Profile setup asks for your information and settings - that Sedentary has NOTHING to do with exercise, but your life outside of exercise. Read the descriptions, nothing about exercise in them, but work and other activity.

And you are NOT Sedentary, walking daily 30 min, plus your other activity. You are Lightly Active.

You are doing nothing that will cause muscle mass gain, so don't even worry about that, but do it wrong you will lose some.

Since you likely have no knowledge of how much you used to eat, be very aware your opinion of 1200 and eating anything above is based on no information, you have no idea what is high or low - unless you logged what you used to eat prior to starting a diet.

Because selecting Lightly Active and the 1 lb or 1/2 lb loss weekly everyone is trying to help you with - will result in eating more.
But still with a healthy sustainable deficit in there to lose just that fat.
Log the exercise correctly and eat 80% of it back correctly, you'll be eating even more, to keep a healthy deficit in there.

You've got an excellent example in post above this where it took 10 weeks to lose 10 lbs because the person made their body go that slow by poor choices.
Slower is better, not because you forced the body to adapt and that's all you got, but because you choice wisely and purposely tried for it.

Alrighty, awesome, thanks guys!
Oh, and one last question..
If I never ran on a weekly basis before then started running 4-5 times a week would it take awhile for my body to adjust and lose weight or would the weight fall off quickly?

Cardio is anything that makes your heart rate faster , which results in burning more calories

That being said, in regards to body composition (weight loss etc.), if you are not using cardio to actually get fit, rather to lose weight, then cardio is only a tool to make your calorie deficit larger for that particular day

So if your maintenance caloric intake was at 1400 and you're eating 1200 daily, then you'd be burning 200 a day right
If you add running or extra walks, you would burn a higher total, e.g. 300 calorie jog, so a total of 500 for that day

This means yes you will lose weight a lot faster, but be mindful that when you aren't eating enough calories or your caloric intake is too low, you may get really fast results in the first couple weeks, but you will hit a wall very fast and probably end up gaining the weight back because you would find it difficult to sustain that lifestyle for a long time

Some important keys to weight loss are:
- Keep your calories as high as you can whilst still losing weight
- If you exercise a lot, eat some of those calories back (thus you get to eat more, you'll have more energy, you won't feel crappy)
- Take baby steps and don't jump into it, the slower the better (the more healthy too)