I would love to lose at least 20 lbs, but I need your help!?

Question

Ok, So I am 5'8" and I weigh 154.
I have gained 20 lbs in a year and recently gained 12 lbs in 2 months because of a new birth control.
I would like to lose this weight in 3 or 4 months. (Hard I know).
I would love any suggestions. Or even ways I can motivate myself. I hate having this weight on me!!
Also, I am a college student so dieting is more difficult for me than it may seem.

Answer 1

find daily calorie intake calculator on the net, enter all your stats and it will tell you how many calories you need a day to maintain, take off 400-600cal off that number and thats how much you need to lose.
eat 5-6 small meals a day (eat every 2-3 hours - it optimizes your metabolism)
5-8 servings of fruit and veggies a day (have lots of veggies to eat in between meals if you are still hungry)
8 glasses of water -carry bottle of water with you and when you feel hungry drink it - we often confuse hunger with thirst (our bodies confuse it)
have complex carbs for breakfast - they give you energy
have protein (lean meat, legumes etc) for dinner - repairs muscle
cardio is the only fat burning exercise and burns fat all over your body (running, jogging, swimming, spinning, elliptical etc) 4-6 times a week for average of 45min, light weight training a few times a week (more muscle=faster metabolism)
dont consume foods that are made of white flour (white bread, cakes, pasta etc.), sugar loaded foods (cookies, ice cream, candy etc) and nothing fried, oily.
of course you can spoil yourself once in a while with a little treat:)
use fitday.com for tracking your intake.

Answer 2

try pilates, do them everyday for a week you will start to see results and then you will be hooked. That is waht worked for me anyway, I saw results so I was motivated.