has my partner done some damage?

iv had very rough sex 4/5 times over 2days and i had a little bleeding after the last time and pain in my belly wich has happened a few times durin sex but every time my partner was thrusting i was getting a pain just under my chest. that stopped when we stopped but an hour later i woke bleeding very heavy its sort of pouring from me and is bright red has my partner done some damage or is this my period wich is not due for another 5/6 days? im worried as my period dosnt normaly start like this and isnt bright red 2 begin with?