advice!! please :)

Jessica
My last period was in march -- it started on 3/25. I didn't get it at all in April so I was starting to get really excited :)))) 
I took a few HPT after my missed period & they were coming up negative. My doctor said it could have been too early & that's why. 
Today when I went to use the restroom (this morning at like 8:00) there was a light pink discharge when I wiped. I figured it was AF starting. 
It hasn't happened again today! WHat the eff is going on?!