I Want to Practice Abstinence but My Boyfriend Doesn't

My boyfriend and I have been dating for a little over two years now and we've recently had a pregnancy scare. I've mentioned multiple times lately that I wanted to practice abstinence even before the pregnancy scare, but with the scare my desire to abstain has only grown. My boyfriend is still adamant on having sex and I don't want to upright tell him no, because I want to respect his wishes but at the same time, I feel like it's my body and he isn't respecting my wishes. Any opinions?