Brown to dark red to brown...

Lorre
I'm confused... My Tubal reversal was 5/24/17 we have been ttc since... AF came 2 days early and was brown discharge for a few days.. Lightly went pink then to red 1 day then back to brown..lasted about 6 days.... I have never experienced this before . is this my hormones adjusting, implantation bleeding or AF?