Overweight

Anyone else feeling a little down due to weight issues?  I was 210 by the end of my first pregnancy and now I'm only 15 weeks pregnant and already 206. I was never really able to loose more than 15 pounds after baby. I'm not only worried about appearance but also health what issues will be or the baby have to face if I keep gaining weight? My doctor hasn't even mentioned the weight issue but also I'm 39. I am trying to Eat healthy and exercise but is just not happening.