Im new on here but i got a question lady's

Zakia
I suppose to had my last depo shot on December 9, 2014 but I didn't get it because I want to work on my second child. My period is back to normal and have been since February. My husband and I had sex on June 4, 2015 wen I was ovulating but my period is on now so I'm assuming I'm not pregnant. Can anybody help me out with that?