Spotting and sex on nexplanon

I've been spotting for a few weeks from nexplanon (Side effect) and I sometimes have sex with my current partner.. We use condoms just because it's common practice for us, but I'm starting to feel as though he's weirded and disgusted by it. Today I told him I had stopped spotting because I hadn't all day, so we had sex and he seemed to get mad at me for 'lying'. I told him I can't control it... What do you guys think I should do?