11DPO, BFN // STIL HAVE SYMPTOMS 😔😰

So ever since 6dpo I’ve been getting yellow Cm, have been getting headaches and hot flashes at night time to the point where it makes my hands and head sweat and I feel like puking 🤢 I’ve been getting that way the past 3 nights now since 9dpo. Other times throughout the days Ive been getting dizzy, & when I mean dizzy it’s to the point where I can’t focus. I’ve been cramping & my boobs have been sore to the touch.

I tested today at 11dpo & I got a BFN but I’m sitting here again with a HUGE headache 😔

Has anybody gotten a BFN before BFP at 11 days or more past?