I dislike my body..

Has anyone been 13 days late and still get a BFP????

It's crazy!! My last period was June 11th and I don't know if I ovulated or not but I have yet to get my period. I get a few low low cramps but nada, no spotting either. And sex can usually make it come but it hasn't. I don't have many signs of pregnancy, I have a few things but nothing that screams "your pregnant" and I took a Walmart cheap test a couple days ago, negative. I'm not stressed, yes I've been wondering where my period is but I'm not overly stressing it.