Implantation?

***TMI***

PIC IN COMMENT

I was on clomid but my doc said I did not respond to the medication the way they wanted it to. Later in my cycle I took an ovulation test and it said i ovulated... called my doc to let her know and she said she highly doubt it's correct. Then I started taking metformin 3 weeks ago and for the past three days I've been having a little bit of brown discharge. Today I went to the bathroom and I had ewcm (just a tiny bit) then half an hour ago I had a lot with brown discharge. The pic is in the comment. I also took a pregnancy test and it was negative. What do you ladies think it is?