Implantation bleeding

So I'm about 9 DPO, and my period is supposed to start on the 5th... this morning (not my first morning pee), but I peed before I got in the shower and when I wiped it was slightly pink. I usually cramp before I start my period or when I start my period, but I haven't cramped all day. I've also peed like 5 times since then and no more blood was visible. Could this be implantation bleeding? I'm new to all of this, please help!