Period constipation

So started my period on Tuesday and today I have been extremely constipated since 3:30 this morning happened the same way it did last time got up and I did poop fine but my lower abdomen area was hurting didn't think anything of it I had just dropped a load I did a sleep study last night so the coordinator woke me up at 5 to release me abdomen still hurting again didn't think anything of it thought I just needed some pamprin seeing as I hadn't taken any until before I left to go to the sleep lab got home about 730ish took the pamprin the pain subsided a bit but not a lot and now it feels horrible cramps and constipation feels like death