Unsure what is going on

Katarina

I'm completely and utterly confused. I've been TTC since 2015, and have no success. This March I was expecting Aunt Flo at the end of the month and she never arrived, usually that isn't to weird for me because I have ovulation issues and sometimes she doesn't show right on time, well now I'm a little over 2 weeks late, no period symptoms. BUT 3 days ago I had very light pinkish bleeding when I wiped, but nothing on my pad and still nothing. Took a pregnant test today and negative. Anyone have any idea what this could be? I've had my periods since I was 11, and I'm 21 and this is completely out of the norm for me. Help!?!