Congratulations!!
I had 2 quite late first trimester miscarriages last year and I'm now 34 weeks. The first trimester is TOUGH! I managed to survive by having therapy throughout my pregnancy but appreciate this isn't available to everyone. Some coping mechanisms:
Meditation/relaxation using the Headspace app
Writing down worries
Do not Google stuff!!
Planning fun things to look forward to (getting hair and nails done, seeing friends etc)
I had scans at 6, 8 & 10 weeks
Buy the book Pregnancy After Loss by Zoe Clark Coates
I saw a consultant for my miscarriages who did my early scans and he said having a normal scan at 10 weeks is as good as the 12 week scan if that helps your anxiety a bit. I did harmony testing with him which is expensive but meant when I had my 12 week scan I already knew I was low risk and didn't then have the stress of waiting for the combined screening results.
After the 12 week scan I felt a little better, then once I felt baby moving around 16/18 weeks that helped, and then getting past the 20 week scan gave me a lot of confidence but I chose not to share my pregnancy with anyone until 25 weeks as it felt like a way to protect myself. I have had my wobbly days but they have been fewer as time has passed. If it helps, the second half of pregnancy has absolutely flown by for me!
I don't think it's right to say the anxiety never goes but you have to do everything you can to fight it because otherwise its going to be a long 9 months (or 7 months now), and you'll then worry about labour and worry when the baby is here and it's a never ending cycle. Have a look at CBT strategies for anxiety and speak to your midwife to see if you can be referred to talk to someone.
You are almost at the end of the first trimester and you're doing absolutely amazing. Be kind to yourself, keep busy and I'll be keeping my fingers crossed for you and everyone else on this thread feeling the same xxx