Spotting*TMI*******PLEASE HELP****

I've had three days of Spotting and my period ended 3 days ago. The last 2 days have been very light...but...Today I was having intercourse and we were having a grand ol time untill the "cum walk" portion...well I got up to go use the facilities and he said "I thought you said your period just ended a few days ago!?!" and I was like "uh...yea why?" Well he made me come back into the bedroom (like seriously 15ish feet from my potty) and holy shit it had looked like my period had just started while we were having relations...(bright red puddle of blood soaked through to the mattress protector) I had yet to tinkle and so as I stood confused, I turned around to use the Lou and sure shit enough...i wiped and there was blood just dripping outta me as I sat there. It seriously looked like my period had started again...I even put a tampon in...what does this mean? Is this normal? Should I be concerned?? Any similar situations???

Please help!!!!