pregnant?

So my last period was 5/17-5/21 iv been overly hungry, iv been in a mood we're I get upset easy. Iv also been extremely tired. My son won't leave my side like a sign or something. Could I be? I also haven't been taking my pills consistently :( I took 2 tests last month and both are negative. App said I'll get my period at the end of the month but I'm scared it won't come.