Help me plz.

Ever since 6 dpo I’ve been feeling extreme pain in my lower back then the next morning my nipples were on fire, sensitive to touch! Around 10 dpo I have this sharp pain in my stomach as well as my back. Then there was this pain pain in my uterus and sharp pain in my leg 14 days past ovulation I had on and off cramps but still BFN. AF due in 3 days Did anybody BFN turn into BFP??