Still no AF

Karina
So AF showed up on 4/25 and hasn't since. I've taken two hpt tests which were negative. I have been having early symptoms ie fatigue, cramping as if AF was showing up, sensitive breasts especially nipples, feeling of bloating. I was advised by a dr friend that if AF hasn't come by the end of the month  to retest  and if still negative to go to my GYN. DF & I have been TTC for 8 months. I really hope that I am but starting to feel down and desperate