should I test again?

Okay so hubby and I had sex on highest percentage day of ovulation as well as other days and I was due for my period Monday but I still hasn't came. I took a test late Monday night and got a BFN. I randomly today started to get lots of discharge and cramping like pains but not my period cramps if that makes sense? Should I test again? Or is it too early to test. Could I still possibly be pregnant?