Cervix while taking birth control?

I know that tracking your cervix position and the how it feels (hard or soft) is a common way to help <a href="https://play.google.com/store/apps/details?id=com.glow.android">track fertility</a>. But has anyone still checked while on birth control? I’m just curious to know what other people experienced and if feel like birth control pills effected their cervix at all.