Period 3 days late and a BFN yesterday!

So as of today my period is 3 days late.. I broke down yesterday and took an EPT that was negative.. Just curious if I tested too early or...? I'll be buying more tests Friday if I still haven't started. I had weird early pregnancy symptoms during this month and I usually have lots of PMS symptoms and I haven't had any so far. Just curious if this same thing has happened to anyone else? And what turned out to happen? Pregnant not pregnant? Thanks!