Important question

sierra • in a current relationship with the love of my life ♡
OK so my period isn't for another 10 days I'm 3 dpo and I had sex 3 times in my fertile were the last 2 days I've had this spotting and very bad back pains and constipated and very very very hungry and tired what could be going on could it be possible that I'm pregnant and that this is implantation bleeding