Why is my cervix open

☀️️Taylor☀️️ • 23Years Young💁🏼 3 Boys👶🏻👶🏻👶🏻 Razorbacks🐗

I’m on cycle day 21 out of a pretty normal and consistent 29 day cycle. Iv felt for my cervix the last few cycles and it’s never been as open as it is now and very high, I can stick the tip of my pointer finger in my cervix. The last few days Iv been super nauseous as if I have a stomach bug. Should I baby dance today or is it impossible to get pregnant 9 days befor my period?