Freaked out!!!!! Help?!?

So ladies... I was having some me time... (Y'all know what I'm talking about.) no toys just hands.. And in the middle, right before climax, I notice all of this bright red blood. I am ovulating this week, and not TTC. Sex is very sporadic.. Haven't had any for about a week and a half. What the hell?? Has this happened to any one else???? Is this normal? (I keep my nails trimmed very well btw.) Thanks in advance!!