Sensitive question about condom

Hi mummies, im a first time mom, few months post partum and would like to ask a sensitive question regards to condom. Please do not comment bad things as im really new to all these. I do not wish to go on birth control due to the horrible side effects. I know theres always that small chance of being pregnant even with protection, if unfortunate. If using condom (fetherlite version) and at the same time withdrawal, both at the same time, and avoid ovulation period, is it lesser chance to get pregnant? I do track my ovulation using ovulating strips too. #firsttimemom