First, after reading your post it reminded me of something I saw earlier on Facebook...this
Anyway I know the feeling. I am 5'2 and I use to weigh 103lbs size 1-3 jeans. I miss being that skinny..I had a lot of muscle definition too. Now after my second baby (6months pp) I am at 154lbs. I feel like a major fatass, but I am working at it! I finally have my eating pretty much down. I cut out most breads, pasta, potatoes, dairy, rice..and a few other things. Of course I have them every now and then because you can't deprive yourself
. I eat a LOT of veggies, some fruits, and meats. Just make sure to portion your foods and have smaller meals...eating about every 4 hours is a good thing too! Drink a glass of cold water in the morning to get your metabolism going! Honestly at the weight you are right now, Brazil Butt Lift would be perfect for you!!