is it possible??

Totally possible! 20 pounds, if not MORE!

I am by no means an expert but losing 20 pounds within 4+ months is certainly doable.

How tall are you? It depends completely on what you are doing and how close to goal you are. The last few pounds tend to come off really slowly because it is the fat that's closest to the muscle tissue. Totally depends:) Nothing wrong with trying:)

They say that up to 2 lbs a week is what's possible/healthy so I would say yes, in theory. On the other hand, the less you have to lose, the harder it can be to lose weight. That is, it takes more calories to haul around a 300 lb body in a day than a 150 lb body, so if those same two people ate the same 1500 calorie/day diet the 300 lb person would lose MUCH more weight.

Let me see... the math geek in me LOVES weight loss... To get to 130 lbs by May 1st, you need to average about an 830 calorie deficit each day. What I do is I set my "goal" at just a smidge below maintenance, which happens to be 2000 right now for my height/weight/gender, but that will vary from person to person. Go into your goals and go to the manual edit option, then just play around with different numbers til you figure out what you maintenance goal is. Setting it up that way makes it easier (to me, anyhow) to make sure I am always losing SOMETHING day to day, and in your case you'll be able to just shoot for a big green "830" calories remaining on your MFP homepage. Eat less, exercise more, and try to maintain a deficit around 830 a day, and you should reach your goal by May. And remember to drink plenty of water, too, or sodium levels or hormones can screw up your weight easily.

I am 5'5, and in school full time. so it is super hard to find time during the week to excersize, but i do it. I am only taking in on average 1200 calories a day, and i burn about on average 400 calories.

You'd want to be eating more than 1200 cals if you're burning off 400. The weight likely won't drop off for you if you don't refuel your body, our bodies need enough fuel to burn and can often get stuck weight wise if we don't eat the proper amount of cals for what we burn.

If you're looking to lose that much you might think on eating back some of your workout cals... check the home page for info on 'properly fueling' your body to keep it running healthy.:flowerforyou: