2 (Ovia) to 4 (Glow) days until my period, and I have no symptoms but get BFNs :(

Libby
I took a test Tuesday (7dpo), Thursday(9dpo) and this morning (10dpo) and all have been SUPER BFNs :( I don't have any period symptoms like I usually have, but I'd think I'd be able to test positive by now :( so disheartening!