I'm late.

my period has been spot on 1 or 2 days earlier then my app says every month since I got off bc in February. I expected my period 3 days ago as yesterday is when my app said I would start and still nothing. me and my husband had sex 2 weeks ago the next to last day of my ovulating being 1 of the 2 most fertile days. he didnt finish so it hasn't crossed my mind since. I took 2 tests and both were negative. No spotting or anything so my mind is just racing. would it just simply be too early to tell?