i hadn't had a period in 2 months i took 2 pregnancy tests and they both came out positive the next day i got really bad cramps and started spotting i talked to my doctor and took a blood test the next day and they said i wasn't pregnant then 2 days after i was in the shower and there was what looked like a blood clot but it was thick like a muscle covered in black clotted blood and nobody seems to know what it is