Hello. Me and my gf were in bed, both naked and she was trying to give me a handjob. I wasnt enjoying it and was getting soft. There was lotion on it including the tip. She then started to grind her vagina against my semi erect penis for a few seconds before I pulled it away and told her I dont want contact without a condom. 6 Days later I believe she had her period for 3 days, enough bleeding that she had to change her pad 3 times each day, cramps that were enough to keep her up, and blood got on the sheets. She doesnt remember the color but i assume that since she didnt notice anything that it was normal. Still, I'm paranoid and worried it might not be her period. She hasnt had nausea or cravings or anything since then.