Hey,the normal weight for 5'5 is about 125 lbs...don't worry,you're not that much overweight.So you would probably want to lose about 25 lbs,and you have about 3 months..that's about 8 lbs a month.It's very possible to lose that much...just be sure you'll be able to stick 2 a diet...if you want some diet idea email me at XROCKGRRLYX@AOL.COM