Scared out of mind

I’ve just entered he 5th week of my first pregnancy. Hubby and I are so stoked but I have bad anxiety and unfortunately it’s hit with this. I’m just incredibly scared that I will have a chemical pregnancy or ectopic. I’m probably way out of line but need some reassurance. I’m 24 and my husband and I wanted this so bad but we haven’t told our families yet so I don’t really have anyone to talk to. I get scared some times when I have abdominal pain but it seems to just be gas.