How does one deal with high anxiety during pregnancy? I'm almost 13 weeks

I have the biggest fear that I'm going to miscarry or go back for my next apt and it will be a missed miscarriage.

I want to enjoy my pregnancy; but when youve been told for 11 years youd never get pregnant on your own, and it happens.. you freak that something is gonna go wrong. 🤦‍♀️

I've paid for private scans at 9, 10, and 12 weeks but my husband has told me no more. Strong heartbeat each time, little babe moving all around.. but how do I get this horrible feeling out of my head?! 😥