bleeding after sex

my boyfriend and i like to be a little kinky when having sex and like it a little bit rougher. i end my period this morning and we decided to have sex. i started bleeding after we finished. i tried looking online to see if it was normal to bleed after having sex and getting off your period but couldn’t find anything, my next thought was to ask here. the blood doesn’t look like normal period blood, it’s a bit brighter. is this normal or should i be worried?