I've been trying to conceive for over 8 months after a miscarriage. I'm 14dpo right now and my cervix changes throughout the day?

Check a test. If you are 14 days post ovulation, your period should be starting in the next 24 hours. If it doesn't, check a pregnancy test and, if it is negative, repeat it in 3-5 days to be sure. I am uncertain what you mean when you say your cervix changes through out the day, but, if you are trying to conceive you may have succeeded! Hope this helps.
???cervix changes? Take your time, relax, don't "try too hard"- I am uncertain as to what you mean by "cervix changes"???