implantation?

This may be tmi for some, but I'm not sure. Anyway, for the past 3 days, I've been having pink/brown tinged cm when I wipe. I'm extremely irregular (last two cycles were 111 days and 124 days, currently CD 66), and I haven't been tracking anything at all.

Normally for my periods, they start heavy with no spotting.. So this is unusual. I'm hoping for my rainbow baby 🌈💕 Has anyone else experienced this and been pregnant?