Confused and worried

Hey y’all! I’m new to posting but I had an experience that really left me feeling confused and worried. My period came and went as normal, today was the first time having sex since it ended yesterday. I made sure I wasn’t still spotting and I did douche with just plain water to make sure I didn’t have any blood clots lingering and thought I was good to go. After we finished I was fine until I felt wetness seeping through my panties, I go check and I’m bleeding. I wiped multiple times and was still bleeding to the point I figured I needed to put a tampon in. I get home and change only to find the tampon was pretty clean and hurt like hell to pull out because it was so dry. My partner is a decent size but out of the 10 plus times we have had sex this has never happened. Has this ever happened to anyone and should this be a cause of concern to see my gyn? Thanks for all the feedback!