I'm at a good weight so I don't need to lose anymore. I've been lifting weights and doing squats and crunches pretty consistently since November 15th and my thighs look a lot slimmer then they did before and my arms are starting to look decent, but my stomach just looks super flat and makes me look kinda underweight. I think I can start to feel muscle forming. But how can I get a 6 pack without looking like a 5'5 underweight weenie? The things I eat are mostly ok but my meds make me not hungry so eating can be difficult sometimes and I often have to force myself to eat. Protein shakes make me jittery. Currently I weigh 167 and I eat about 1600 calories a day. Sometimes close to 1700. I work out for half an hour every other day.

Does anyone have any suggestions?