CD36 BFN (REGULAR 28-30 Days Cycle)

BTS V

I have a regular 28 to 31 days cycle ever since. I am unsure if I had implantation bleeding last March 25 stain) after peeing, I wiped and I saw brownish/pinkish stain. As per <a href="https://play.google.com/store/apps/details?id=com.glow.android">Glow app</a>, March 29 is my expected period but I am 5 days delayed now and Ive been feeling weird in my stomach. But unfortunately I got 2 BFNs yesterday. Anyone had this same scenario and ended up being pregnant??