confused

Erika

so i got the depo shot in july last year. didnt continue it. i didnt have a period til january. it lasted a whole 3 weeks. February i got a normal 5 day week period and every 20 days i got the same period. April 6 was my last period BD during my fertile times. Now im 7 days late have taken 3 different cheapie tests and all negative. i really want this we have been trying this month too. Stressed maybe or i just wait a big longer?