Can i get pregnant on my low fertility days ? like if the window says low chance to get pregnant . what is the percentage of possibilities?

Either you will or not, pregnancy has been documented from exposure at any point in the cycle including menses. One should never use "low fertility" predictors when pregnancy needs to be avoided. Percentages vary with the regularity of a woman's cycle. Use this as BC & it will eventually fail.

Agree with Dr. Ferguson. Pregnancy is known to have occured from sex on any and all days of the cycle. If you do not wish to be pregnant, use contraception all the time, every time. Consider implanted contraceptive, or IUD. Practice safe sex. https://www.hopkinsmedicine.org/health/wellness-and-prevention/safer-sex-guidelines Get HPV vaccine,