Do I ovulate the same on birth control?

I got the arm implant two and a half weeks ago and I let my fiancé cum in me for the first time. We waited until I was past the one week mark like my gyno suggested. I'm just confused if there is like a certain time where I have a higher chance of getting pregnant. Do I still ovulate the same? It might sound stupid, but I just want to make sure I'm covered.