What does it mean if one week ur cervix is high & hard and the next week high and really soft?

we are ttc and ovulation days were 19th & 20th of august bd 16th 20th 21st & 27th (been having symptoms,check out my other questions) well just a couple of days ago/last week i started learning to check my cervix...well the other day when i checked it it felt i guess i would say kinda high and hard then today (22DPO) felt again and it was i guess high (had to "push" to find it sorry if TMI) it was high and really soft i guess you would say...what does that mean?? could i be pregnant?? or what (and im irregular so i haven't seen AF since 3/5/09)