---i am suppose to have my period during the weekend, but never came. so today, i had some mild cramping and bleeding. i notice that the bleeding isn't much. i was wondering if this is my period or is it something else.

--i think me and boyfriend had unprotected sex almost ten times during that weekend. we used a condom the first one, but the rest no condoms...

--to me, it seems weird to have all this sex and the next day get your period..is that normal? should i worry? thanks!