still panicking

Mona • 20. Married. Trying to have a baby
I'm suppose to be around seven weeks and two days pregnant today(not completely confirmed) but my first obgyn appointment is not for another 21 days-I still have NOT ONE pregnancy symptom, I'm deathly afraid I'm going to go to that appointment and they're going to say there is no longer a baby in there. My husband and I have been trying to get pregnant for two years now, I just want to be a mom.