I need answers

Kh
Well I've been trying to convince for sshe ome time now , but anyway on the 8th Af came and it was acting a little crazy i was spotting at first and then it stopped then it finally came on the next day regular....... So on the 11th my af was over , but on the 15th when I went to pee I was spotting and then nothing smh so yesterday I started feeling really sick and had pains in my lower stomach !?! And this morning I felt so nauseated I just want to know what do yall ladies think it could be