I have had two children before this one, both boys and I have never lost weight in pregnancy except for the first month. I am now 18 weeks and just keep losing weight. Since the beginning of my pregnancy it seems no matter what I just keep losing it. I have got in trouble by my doctor and WIC. I do not have nausea or vomiting buy sometimes a lack of appetite. When I have lack of appetite I have to force myself to eat but still even eating like 4-5 times a day I lose weight. Does anyone have any suggestions?