Nervous about appointments

Does anyone else get extremely nervous before OB appointments, I know for the last two I didn't sleep good for a few nights before and I just feel like a wreck...I've got an ultrasound thursday morning and im already feeling anxious. I had a mc right before this pregnancy but haven't had any problems with this one and im 16 weeks so risk of another mc is low. Guess I just wanted to know if anyone felt similarly before appointments? Wish I could just be 100% excited but I don't think I'll be comfortable until I'm holding my little baby