Papaya

In my relationship (married 3 1/2 years) I have found myself as wholly responsible for birth control, and lately when I reach for a condom I get a mood-killing eye-roll. I would get a vasectomy if we agreed on it (can't seem to) so I'm looking for other DIY options to sterilize myself, temporarily or otherwise. I read up on the properties of papaya seeds yesterday (it seems that if you take a teaspoon daily for 90 days you become functionally sterile) but they taste so bad that on day 2 I'm wondering if I can stick with it. Anyone have any experience with them (+\-?)