Is it possible to penetrate the cervix?

I've read some other questions on here about men hitting the cervix with their penis and that the penis doesn't go through the cervix. I'm larger than average and my girlfriend is telling me that I'm actually going through the cervix. When we first started having sex it was very painful for her because she thought that I was penetrating the cervix. Now she's past it being painful but still thinks that I'm actually penetrating the cervix. My question is, is that possible?


How can I feel more comfortable with co-ed bathrooms?

I'm a new student at my school and have a kind of odd problem. You see, I went to a really conservative boarding school and was never very comfortable with my body (especially when it entailed someone else seeing it naked!), so this whole co-ed bathroom thing is freakin' me out! I know this is pretty silly, but every time I shower I become paranoid that a guy is on the verge of accidentally pulling back the curtain (or worse yet — can see my nude silhouette through those revealing plastic sheets). I just unpacked and classes start tomorrow so I don't want to move out of my dorm... please help or else my speedy showers are going to lead to a stinky start!