Ovulation predictor kits as birth control?

I am having a really hard time trying to find the right birth control for me. I have a 16 month old son who doesn't sleep throughthe night yet. So the idea of getting pregnant terrifies me. I can't use any hormonal birth control because I have pretty bad migraine and the times I have used them it has been a nightmare. And my husband hates condoms. I have a very regular cycle and I was thinking about a combination of charting my cycles plus ovulation predictor kits. I used those when I was trying to get pregnant and they worked really well at pointing out my fertile days. Has anyone done this before? Any advice or suggestions? Thanks a lot!