I hate this!

I SO hate waiting for AF to either show or for me to get a BFP on a HPT!!! AF is now about 4 days late. I took a HPT on Wednesday and got a BFN, but I am thinking that maybe it was just to early?! So if AF is not here by Monday, I will test then! I just would like to know what is going on before I leave for San Diego!!!
I have had my period just stay away before for like 2 months, but I never had symptoms or anything. Now that I am a little better at knowing how my body reacts, I would like to think that maybe it is because I am prego!
Oh I hope so!!!!!!!!! I want it so bad!!!!! Hopefully my trip to San Diego is going to be a celebration trip!!!!