This article will explain exactly why you don't have to be afraid of the weights, because as the others said, they won't bulk you up, even if you lift heavy: www.sparkpeople.com/resource/fitness_artic
You mention exercise and low carbs, but you don't say anything else about your nutrition. What is your current calorie range, and how many calories are you burning? How tall are you, and how much do you weigh? If you are already in a healthy BMI, you're going to find the process very slow and painstaking, perhaps even impossible if your goal is unreasonable :)
Writer, mother, wife, and breadwinner. I love to run, but running doesn't love me, so I'm switching to my low-impact bike.
I'm not pregnant, just fat: My blog. fatnotpregnant.blogspot.com/
| current weight: 186.4