Dr Hook,I am a married man and have always been faithful to my wife and was drinking a couple nights ago after a fight with her and did something very stupid. I met a woman online and visited her. I'm now in great fear and can hardly sleep. I will list the things that happened below. Rubbed her vagina over her underwear it was a bit wet,We made out for 10 min (I do have Gingivitis and my gums tend to bleed often,She rubbed my penis on top of my boxers (it may have touched her),I sucked on her breasts for 10 min,She sucked/nibbled on my finger,I removed my penis from my boxers and masturbated Myself. After that we talked and I left, I asked her if she had other sex partners and she told me she just got divorced 2 months ago and has slept with 3 different guys unprotected in the last month because she is single and dating.One other thing I cannot get off my mind is that after I finished masturbating, I looked at my hands and saw a streak of blood on my pinky finger about 1/4'' wide x 2'' long (it was dry at that point, but was defiantly blood). I showed her and asked if she was bleeding, she showed me her hands and she had absolutely no blood on her that I could see, then my mind goes I went to the gas station before getting to her house and I am betting I got that blood off from the gas pump or the store door handle. My concern is that whoever the blood belonged to, it wasn't mine and I just finished masturbating myself with that hand for 10 min or so.  I didn’t use any lube it was just dry masturbation with the blood on my finger.