I know that when you become most fertile your cervix is usually high and soft, but how long after you O will it start to come back down to a lower position? I ask because yesterday it was high and firm (in my opinion, this is still my first cycle and I just started feeling comfortable enough to check it). This morning it was higher and more firm, now 45 minutes later, I can't even reach it. Do you think that's a good sign? Thanks!