This may be a bit TMI, but I am a bit worried as to why any time my fiance and I have sex, or even me just getting turned on makes me spot blood. It is similar to the spotting I had before, being a rusty ish color. It's not heavy bleeding, is only light. Is this ok? Should I go to the doctors for this? I don't want to do anything that could cause harm. It's happened twice and now I'm just staying away from doing anything sexual for now.