One day late. No real symptoms. BFN tests so far.

Kandice
I can't sleep and this is my first post ever!
I'm one day late (AF was due Sunday). I'm usually very regular, to the day. 
Last week I had 2-3 nights where I had a mild wave of nausea come over me and went away quickly. I also have sore breasts but that's a sign of AF for me as well. 
I've taken 3 tests so far-the 3 days before AF, all BFN, but did not test on day of missed AF (yesterday). 
I want to test again but don't want the disappointment. I've tested before on day of AF or when one day late, only to get AF shortly after. 
Anyone else in my boat??