Implementation bleeding? Please help! TMI

Bl

Hi ladies! I’m on cycle day 22 and AF is expected 4/3, but today I started to have this light pink CM. It wasn’t enough to dirty underwear and i only noticed it when i was checking my CM. I haven’t had this before but i was wondering if it was possible that it’s implementation bleeding? My only other symptom is sore boobs the last few days. They’re sore everywhere, not just the nipples. Any help would be so appreciated. We’ve been trying for quite a few months now and I have only one ovary... I don’t want to get excited for nothing!