Hello. According to my calculations, ultrasound at 8 weeks was schedul…

Hello. According to my calculations, ultrasound at 8 weeks was scheduled. At 4 weeks, I had stomach pain and they said there was a risk of taking Dufaston. Everything was fine. Today I woke up and my belly hurts again. I'm very scared. A year ago, I had a miscarriage. Oh god, I'm panicking. I'm going for an ultrasound tomorrow. I also heard that Utrogestan is better than Dufaston, but I don't know how to switch to it... Has anyone experienced this?