My husband find it unsexy to have sex for TTC!

We've started TTC 3 months ago casually without having any idea about the ovulation day or fertile window.

It's 10 days that I'm using this app and now I'm on my peak of fertility, but my husband is finding this situation very weird and unsexy. I tried to have sex last night and this morning, and he kinda refused it.

He says he's not a sex machine that I can turn on and use, and he can't just have sex because it's my highest fertile day.

Has anyone else had any similar situation at the beginning of the TTC?