Need some reassurance

According to my calendar I'm about 8 weeks along. I'm so nervous though. I haven't been to the doctors yet and the midwife won't see me until 10 weeks. I haven't had any cramping or spotting or anything like that, but I'm just so scared that they won't be able to find a heartbeat. I don't have many symptoms which isn't helping. I had a few but they aren't consistent. I'm just scared because a coworker of mine came to me and told me she was ten weeks pregnant but finally feeling like herself again that day. 2 days later she miscarried. Right now I just wish I had some sort of clear symptoms to ease my anxiety!