Not a period but I'm bleeding?!

I need to throw something out there.  According to my calendar, I ovulated over the weekend, but today I was bleeding. Not just spotting, but full-on red blood and mucousy stuff. Yesterday my boyfriend and I had our first major conflict and I'm so afraid he's going to break up with me, and I've been super stressed out the past two days waiting for him to talk to me. We've never had sex but he fingers me and so I know this wouldn't be "implantation bleeding," not even close. I had to wear a panty liner today and now a pad, and I feel slightly cramped now, but not like the kind of cramps I get on my period. There is no itching or burning whatsoever. I've also been VERY regular with my cycle the past couple years, and haven't had two periods in a single month in years. What is happening??????