My bf doesnt believe the rod works

My partner and i are both 20 and he thinks that I'm still going even though I've got the implanon. I've tried everything to make him understnad that its stopping me from realising eggs but still wont listen. He's getting so upset about it that hes refusing to have actual sex with me.

Its getting on my nerves now. He's been told by a few drs that I'm not going to get pregnant but still he's paranoid.

He does have a reason. He had a girlfriend a few years ago get pregnant on the implanon.