Should I be getting a positive by now?

I’m 3 days til my period and I tested and it’s stark white.

I’ve had weird cramping the last few days, my right boob fucking hurts & I’m an emotional mess.

I feel like if I was pregnant it should be showing up by now with FMU, I waited until this morning to start testing & nothing.

I know I’m “not out until AF shows” but everyone else gets their BFP is seems like at 8-10 dpo. 😕 ugh