I'm in the same boat. I am 12 weeks pregnant, and 7 months post op. I have lost 18lbs this first trimester but have had really bad nausea and to tell the truth, most food is unappealing to me at this point. I have tried to eat more but I'm still loosing. My dr said baby is doing fine, he will take everything it needs and I will be the one feeling sick. So far so good, he said he wouldn't worry if I loose another 5 lbs, and that I should start gaining within a month or so. I have decided not to worry and relax, just trying to keep myself hydrated and eat every chance I get , which is not much.