Hello girls! The period is small, but the belly is getting quiet sever…

Hello girls! The period is small, but the belly is getting quiet several times a day, it gets quiet and releases...like an hour or two. Then it's fine. But now in the evening it's straight up pain like during periods, I took No-Shpu and put on a candle Papaverine, it seems like it got better for half an hour, and then again...what could this be from? On ultrasound (12-week screening) they said there's a threat, I'm taking everything they wrote.