Cervix checking Q in pregnancy

So I just checked my cervix finally after feeling brave (was 100% sure I all was clean and hygienic to avoid any infection) 
Well the last Time I checked my cervix I was ttc. My cervix that time was high up, hardish and firm in feel and had only a very small opening (ive had 1 vaginal birth) and was a circle/dome type shape. Also seemed to always be more towards the back. 
I am now 34 weeks pregnant with baby #2. I have gestational diabetes also. Well I just checked my cervix and I'm confussed whether it's normal or not because it feels so different. It was quite easy to get to (middle finger) it was more towards the front, very soft almost mushy/spongy in feeling and the opening was a lot bigger I could have out finger if I was braver but didn't. It was also a differnt shape it was not dome/circled shape it was more like Erm my lips puckered (only way I can describe). 
Does this sound normal?