overthinking?

So we did the BD 2/28 & 3/1 when I had EWCM. Unsure when I really ovulated but ever since my ovulation window ended I've been having several symptoms (cramping, backache, nausea but when I eat it's gone, creamy mucous twice when I would wipe, sore boobs and sensitive nipples, and now to add to it- hot flashes). I normally get cramps & sore boobs a week prior to AF. This was 2 weeks beforehand. AF is supposed to come 3/18 or 3/19. Do I test tomorrow? I want my BFP! 😫 my last period was 2 days late and very light.