terrified

This pregnancy has given me the biggest bout of anxiety I've ever dealt with. I am consistently nervous of not actually being pregnant (despite 5 positive tests). I'm afraid I'm going to go to my drs appointment on the 12 and not be able to find a heartbeat. I'm just scared of everything. I just want to have a happy and healthy 9 months but I am psyching myself out with everything I'm reading. Especially the anecdotes on this damn app. So many people have had miscarriages and I don't know how to calm my fear. Please someone help.