Light pink spotting

Hi there I was anyone could help me out. Two nights in a row around the same time I’ve had very light pink spotting. It’s only one wipe then it’s gone (exactly like the photo below) around 7/8pm. Then I have nothing through out the day. I’ve had unprotected sex 3 times this month with my partner right after my period ended and this is something I’ve never experienced before. Going by my period/<a href="https://play.google.com/store/apps/details?id=com.glow.android">ovulation tracker</a> I am just at the beginning of my ovulation. Along side this I’ve experienced very mild back pain and very dull what feels like cramps which are painless but I know they are there. I don’t want to get my hopes up of this being implantation bleeding as I’ve read a lot about ovulation bleeding. But given the time of them and the unusual sensations in my stomach and back I’ve been feeling i thought I would turn here for some advice! Thank you