It must be the cervix check, I just had my first one on Monday. It feels like I'm about to get my period. 😫 but I'm not dilated at all and I don't expect to go early bc my first 2 were 10 days late.
I never had my cervix checked but the only pains I felt the two days before I had him were period like cramps. But I know that getting checked definitely can give you the cramping.