Painful sex during ovulation?

When my husband and I have sex around ovulation, it feels like he is hitting something with every thrust. I assume he is hitting my cervix? Does the cervix lower around ovulation?

Occasionally throughout my cycle if we are having sex in certain positions where he is going really deep, I feel the same thing. But around ovulation he hits it every time we have sex, even if he's not going very deep.

Is this normal? Are there certain positions that can prevent this?