Pregnant Again?

I know I can just get a pregnancy test to be sure but just for the heck of it.

Gave birth Feb 14 (valentine baby loll) and I had postpartum bleeding for 35 days. I had a break and got a period April 2-4 (a little less time than usual) then I had a period May 1-6. We had protected sex May 27th. I am currently 8 days late as per the app. With my first born my period went back to regular routine right after my pp bleeding stopped.

Note: I do exclusively breastfeed with occasional formula here and there. But idk if that could be a reason for it being late. If anyone is willing to do the math lemme know if there could be another bun in the oven tia ✌🏼