Cycle day 40…

I’m on cycle day 40 and still no period. I’ve never been this later before. I’m usually 25-29cycle day, with a handful of times where I’ve been 33,34,35 but never over that. I am sexually active with my husband but we use pull out. I have taking multiple cheapie wonderflo tests and all negative. Yesterday, I saw the tiniest little, pink spot on the toilet paper, but nothing since then.

Ideas?