Bfp, then Af like bleeding, then bfp?


I am 16dpo today, on Wednesday. I took a test on 14dpo when my period was supposed to come, which it did. it was a very faint bfp. then I get AF like bleeding but no cramps, only having very few twinges in my left ovary the past 3 days. I took a dollar test today to see if it returned to bfn and it got even darker! my first test on 14dpo was with a free and this one was a dollar test. oh, also, I had a major temp dipped on 11fpo which shot back up. so I know I implanted at 11dpi