Pregnancy weight loss

Has anyone lost weight in the first trimester and still not gain it back in the second? I’m 19 weeks. My prepregnancy weight was 215, I got down to 204. I’m now only 206. I’m starting to get nervous. Everyone I know gained a lot in the second trimester. It worries me since I lost so much and still not gaining. I eat as much as I can. I’m not sure if it’s because I’m active and working full time or not..