Tmi. Implantation bleeding?

Denny
Hi ladies! I was supposed to start my period monday, but hasn't came yet. Still have one more day to see if it does come. I checked my cervix in the shower and this is what came out, except a tiny bit bigger. I checked three times and this is what came out each time. I've thrown up twice the last two days. Rather blamed today's on the zinc I take. And yesterday I think it was from grapefruit juice. I've had other symptoms, but can easily be other things as well. I don't want to get my hopes up since I have pcos and have had so many heart breaking negative results. Some help please, ladies.