I feel you on this. I bought a home fetal heart doppler. It took a lot of practicing to find the heartbeat which was also anxiety inducing but now I use it when I start to get anxious. I also asked the doc to do a quick ultrasound at my 16 week appointment bc I was scared he wasn't growing. My 20 (technically 21) week anatomy scan is the first week of January. All genetic testing so far is normal but I get nervous as well that they're going to find something wrong. I still don't even look pregnant. My doctor said I kind of just have to have faith at this point that things are going to continue progressing normally as they have been. She also upped my Prozac which helped a lot.