Spermicide?

Courtney
So my boyfriend and I had a "scare" (he was convinced I was pregnant but wouldn't listen when I told him I know my own body). I absolutely will not use birth control because I don't feel that it's 100% safe for my body in my opinion. He hates condoms and let's be honest, sex with condoms isn't as great. Has anyone here tried spermicide? Are there any harmful side effects or anything like that? What type is better? This is our next choice to try so any advice would be wonderful.