Menstrual cups?

Alexis
I have very very heavy, irregular, absolutely annoying periods. They can last for up to 3 weeks at a time, with only 2 weeks in between them. I want to start using the cups instead of tampons because I'm spending so much money on tampons, but my husband finds it gross, and refuses to listen to me.
Keep in mind that I can't just go buy my own at the moment. Due to other medical reasons, I can't drive and I have a fear of using my card to order offline, so I make him sit there when I order things.
Also, I am on birth control. It's not enough to regulate my periods (somebody always tries to tell me I need birth control when I'm already on it)
How do I possibly get my husband to understand that I'm not just being gross? Lol. He never has a problem with tampons in the trash cans and stuff, but has a problem with a cup he'll never see? I don't get it. Does anybody else have this issue with their SO? My doesn't care what I do... EVER... but he's pretty set on this not happening. I even had him watch a video that explained what the cups were, and he pretty much acted like he never saw it.