help if u can

so a week ago i had sex and my bf cum inside me and the last few days i had headachs boobs hurt so bad to even tounch them they hurt to felling very sick .today i wiped and there was white discharge with a streak of blood then in the afternoon i=felt like my period was starting i am passing small blood clots but light red bleeding but there nothing on my pad .and this doesnt feel like my normal period i skip months on periods. but when i get them there always in the middle of the month and when i do get them my first day is so heavy i have to change every few hours. so is this implantation bleeding ...