No period but medium cramps

Zyria

Cramps every now and then but this morning it’s a lil worse after 3 months of no period Bc of my miscarriage surgery April 3 I still haven’t seen my period after that date .. but I’ve been cramping every now and then starting last week and of course I’ve been having sex every now and then we ain’t trying to get pregnant but if it happens then it happens but can someone please tell me what’s going on ? Took a pregnancy test and it was negative yesterday