Help!!

Natasha
I've been having what I thought was my period for almost 7 days now, it's usually 4...the last couple of days I've noticed what looks like small pieces of tissue coming out of me. I'm going to post a picture so everyone can see and I'm sorry if it grosses someone out. I went for a beta hcg quant today and should find out the results tomorrow and I have a pelvic exam scheduled for Monday. Anyone know what this may be??