Early pregnancy and previous miscarriage

Hey to all those out there who have suffered losses and praying for that rainbow baby!!

We have been trying for a while and I had a chemical back in April. Since then did follow up tests and found out I had low AMH. I’m 37 and get my period. I was a week late and did a test yesterday and it was +.

I’m too scared to even call my obgyn and make an appointment because the last time I did that I had a chemical at 5 weeks and obviously didn’t have a prenatal appointment.

Is there anything I can do in the meantime to increase the likelihood of it being viable? I’m already taking prenatals, folic acid, dhea, and coq10.

Also, I was pregnant 2 years ago and had to terminate for non medical reasons as it wasn’t the right time and the doctor put me on a progesterone suppository. It seems like none of my obgs now believe in that but I had low progesterone and I’m wondering if that’s what helped then?

Sending good fertile vibes and baby dust to everyone and praying this is my rainbow baby!