I have to agree. The treatments involved with cervical cancer must be fairly aggressive, and I am pretty sure can cause serious damage to a fetus. As for the not getting pregnant, did you do chemo or radiation? Thats probably why you haven't conceived. I also think you should have a good talk with your Dr. Good luck with the cancer, I hope all turns out well for you.
Why are you trying to get pregnant when you have cervical cancer? Isn't that dangerous for you as well as the baby? I think you should talk to your doc about this one...