I had 3 miscarriages in 2016 because my progesterone was low. In 2017 I got pregnant with my son and took progesterone and he was healthy then same thing 2019 with my daughter. I got a positive test a few days ago and started taking my progesterone. I did blood work 5-19 and my beta was 50.4 then today 5-21 and it was 75. It didnt double and it makes me worried. I am taking the progesterone. Anybody else with slow rising betas?

***UPDATE***

I wanted to update and say that after 5 days they went up to about 340. I had an ultrasound yesterday and I'm 8w4d and baby is healthy with a strong HR. So slow rising HCG can happen!