Cervix opening in luteal phase

My cervix closed after ovulation until dpo5, since then it is closed in the mornings and open at night - dpo11 now. Has anyone else experienced this? I've googled like crazy and keep finding the same info - that cervix will close after ovulation and open slightly when AF comes - but mine has opened a bit every day since early luteal phase - 10 days before AF is even due 🤔