tht blood could be spotting tht pain im not shure about but did ur gf take a pregnancy test? she could be pregnant. did u guys have protection when u had sex?

on several occasions when my bf and i have sex i bled very badly with thin bright red blood. and it isnt just a little bit its plenty and usually week or so afterwards i get a uti or yeast infection

iv been trying for a baby.. and have came on a weird period a day late.. its brown spotting and not heavy.. and then the day later it went really red.. then back to browny colour and isnt as heavy as a normal period is on first day !? i had all the signs of pregnancy before i came on.. frm sickness to sore breasts, going off foods etc, but negative pregnancy test?? n now came on my weird period?! could i still be pregnant? or is it just a weird period.. iv never had anything like this before .. anyone had anything similar or no wot it cud b?