missed period and pink discharge?

so i was supposed to get my period on june 1st, but my periods been known to give or take a few days. it’s the 10th, and i still haven’t gotten my period.

i hadn’t had sex since my last period (may 5th), up until yesterday (june 9th) which was more than a week after i missed my period due date. my SO didn’t use protection, but he also didn’t come inside me.

this morning, i found slightly pink discharge that comes off in small amounts onto my tampon, but is gone when i wipe. i’m hoping it’s just my period charging back up.

i don’t know if i should take a pregnancy test, since i didn’t have sex since my last period until yesterday. i’ve seen a lot of posts saying pink discharge could be implantation bleeding, but doesn’t that usually happen a little under two weeks after ovulation? according to eve, i ovulated over 3 weeks ago.

i really can’t be pregnant right now, so i’m scared out of my mind. any ideas what’s going on?