baby doctor appointment

y'all.. My nerves and mind are going crazy. I have my second doctor's appointment since finding out I'm pregnant with my rainbow on Tuesday.. I'm SO SCARED that they're going to tell me that there's no heartbeat again. I was about as far along as I am now when I found out I had a missed miscarriage with my first baby, a little over a year ago. I need words of encouragement.. I'm trying so hard to be optimistic, but I hate being disappointed.. Helpppp. 🙁