i had sex with my partner the day my period ended and it was fine. two days later i spent the night with him and the first time we had sex i bled a little after, but the rest of the night was fine, no bleeding at all. i then had sex 2 days later and was bleeding like i was on my period during sex. it stopped a few minutes later. couple more days later we had sex and i also bled during sex like i was on my period. i put a pad on thinking i was starting again but it a little later than last time. since then i will sometimes get a little spotting when i urinate. i also feel as if i may have a uti, i have been urinating a lot and have pressure/pain in my left kidney area. and have been feeling hot a lot lately. what could this be?