High, soft cervix.

Does having a high soft cervix mean that you are ovulating or could it be because of something else? 
My cervix was high and soft only one day this month, and the rest it is noticeably lower and harder. 
Can the cervix and the body go through a kind of "ovulation phase" (including a high, soft cervix) without actually releasing eggs? Or would the body only do this to release an egg?