Newbie questions!!

So I’m 9 DPO but my period is expected in 3 days, and I’m getting all BFN’s. I ovulate around CD 18, with a short luteal phase of about 11/12 days. If I’m getting BFN’s with my period being so close, is it safe to assume I’m out? This is why I don’t understand these pregnancy tests that advertise “6 days sooner” because theres no way for someone like me to get a BFP at like 6 DPO?!? Sorry I’m a newbie and trying understand this whole process haha.

This is the first month I’ve had consistently sore boobs since right after ovulation, and cramping on and off since last night 8 DPO.

Can someone give me some insight? ✨