What do you think? Did I wait long enough to test?

I had on June 20th Im on Depo Provera and my partner has had a vasectomy for 4 years he also put a condom on midway through before he d because he knows how paranoid I am with pregnancy. Im even on anxiety medication for it. I took a pregnancy test on July 6th (16 days after ) and it was negative I took another test today (20 days after ) and it too was negative. I cant go on my periods because depo has my periods all out of whack I bleed for weeks at a time in fact I was bleeding when we had ........what do you think?