I have no self control

AF is due in 6 days....i have been having hot flashes, nausea and throwing up, a lot of dizziness and feeling so tired..i mean.....feeling tired like i haven't slept in days kind of tired the last 4 days and it always starts on the afternoon. I want to test...like right now but im scared it will be a BFN. I mean i guess i could go get a 88 cent test from walmart...but...then id b setting myself up for yet another disappointment maybe and id be sad and go thru all of this for yet another month. Ugh! What do u ladies think....test today or tomorrow morning.....or see if AF comes??? Advice please :)