Did anyone’s milk supply go up & got a bfp?

My son is 9 months old, my milk supply has been regulated for a while now & it never goes up, my son nurses at the same time every day.

But a couple days ago my breasts are starting to get hard and full 2-3 hours after feeding when I could go 8-10 hours before without them feeling hard and full.

I’ve also been nauseous, have hot flashes, fatigue (me and my son slept in until 10:30am yesterday and today 😱)

I’m 4DPO today. I know implantation usually happens 6-12DPO. When I was pregnant with my son before I got a bfp symptoms started around 3DPO. I’m very in tune with my body to say the least! We BD’d 7 times in my fertile window, using pre seed, taking BBTs & taking OPKs.