I had intercorse for the first time on October 11 (used a condom) my last period was September 13 now on october 15 I started having some heavy cramps which later on in October 16 I started to get brown discharge (that's never happen before just the end of my periods) and some small amount of blood when I cleaned but later on the day that brown turned into brigh color red blood which was coming out a little bit but that night I put a new pad on and when I woke up it was completely filled, everything, now today the blood is coming out more than yesterday (still had some cramps during this time) with some clots but it's slowly starting to be just some drops (but when I clean their bits of clots and a lot of blood) , and my cramps are lowering, is this my period or inplantation bleeding? help