I was exactly the same! I got my BFP on the 28/01 and only just had my first midwife appointment last week. It's such a long time to wait until your first appointment and scan but once you have seen your midwife, they will give you the reassurance you need and you can tell them all your worries
My midwife said 'mother nature has done this millions of times' and that has kinda stuck with me. I'm going to try and not worry unless i have a reason to worry (easier said than done at times)
I did have an early scan last week (i had the tiniest amount of bleeding plus a persistent migraine, neck pain and loss of symptoms) and it has really put my mind at ease.
Like emcayo said, try and find a good show to watch. Iv'e been binging on Gossip Girl on Netflix