Losing weight... second trimester...help

I Am just now entering my second trimester. My pre pregnancy weight was 215lbs and it was a steady weight. In fact, I couldnt lose weight no matter how hard i tried before i got pregnant. Since ive been pregnant I lost 10lbs already including 3lbs in the last two weeks and im still progressivley losing. Im not trying to. I dont eat three meals a day but i didnt before i was pregnant either. I have been eating less portions and ive had a lot of nausea aversions. My question is, is this healthy for baby? Im worried because i was told its not normal to lose weight once you hit the second trimester. I dont want it to hurt my baby.