Symptoms gone!

Ok this may be silly but need to tell someone as I feel down about it...
TTC baby #1, this month we BD most days in fertile week and I felt O pains when Glow predicted. For 8 days after, I've felt nauseous on and off, had cramping, felt absolutely exhausted and also bloated but for past 2 days I've felt nothing! All symptoms seem to have disappeared totally and I can't help feeling I should still be having symptoms if I was to get a BFP this month?! Took a HPT today as I couldn't wait and got a BFN. AF due in 6 days. Hate the 2ww, so disheartening! Is it just me who's going crazy?!