10 days Late

Kat • TTC... Baby #2... ❤

Ok, So AF was supposed to come on 4/3/18, and on 4/1/18 I wiped and it was a light light pink color. I didn't think anything of it and put a tampon in. When I went to change it, there was nothing, and still to this day I haven't seen the pink nor AF. I took a test 4/9/18 it was negative. I took another test 4/12/18 AGAIN a BFN... is it possible to still be pregnant? 10 days late with no AF? What should I do, wait and test again?