My female parts are playing possum

Na

Today is cd33.

BFN on cd 26, 28, and 32

Yesterday on cd32 I swore I saw slight pink when I wiped and again like every month I bawled my eyes out. Then nothing, just continued mild cramps. Today, cd33 I wiped and brown blood..but only when I wipe. I dont want to start my period bc we've been TTC for 4 years, but now my body is just being cruel. It's trying to get my hopes up just to crush them. The guessing game is driving me bonkers