TMI Anyone know?

Hey everyone sorry it's a long one but I need some advice I'm 21 and I'm married and I suffer with PCOS I came off my pill in November had 1 light period about 2 weeks later then nothing since I've recently been to the doctors with pains in my cervix and ovaries she gave me swabs and a smear test I'm only 21 but she had enough concern to give me one early. I woke up this morning bleeding heavily with cramps and when I just went to the toilet I changed and there was stuff that looked like endometrial tissue it was quite stiff and was a bit gray but bloody I'm a bit worried I've phoned doctors but no one to take my call anyone know what it could be?