Pink discharge.

So I’m on the pill and we use condoms. The past five days I’ve noticed mostly white/yellow discharge with small amounts of pink. Is this implantation bleeding? I’m really afraid. I’ve never seen it before. My period is supposed to be 3ish days from now (maybe Tuesday Wednesday or Thursday). Can someone help me please? I took a pregnancy test yesterday and it said I wasn’t pregnant. But I know it’s very early It was one that will tell you five days before the start of your next period.