Vicci, out of curiosity, did you see the lab report? If you were told you had CIN III, what grade of dysplasia was in the margins? Is it in the endocervical canal? CIN III with involved margins could mean a lot of things, which is why it is so critical to see the lab report. Insofar as other options are concerned, if you still have involved margins and need further treatment, you still have choices of what you can do. It just depends where the dysplasia is located and how extensive it is. In the thread "Cold Knife Cone Procedure And Update", SacMomof2 got a second opinion from the GYN/oncologist at UC Davis,who adviced her to get traditional cold knife. (Her previous doctor told her to get a LEEP/cone done.)
In more extreme cases, there is trachelectomy, which removes the cervix but leaves the uterus for fertility. But it really depends on the what the lab report says. Since your doctor hasn't been very explanatory with you, I think she should be fired. A caring, ethical doctor wants you to be as educated as possible about your condition and your options so that you can make informed decisions. Knowing what is involved also removes so much of the fear and gets you actively involved. I speak from personal experience.
I'll definitely keep you in my thoughts, while you wait for the lab report so that you don't need anything else done. Worst case scenario for pregnancy is that you would need help from a doctor to get pregnant and carry the child to term. The more of a cervicx gets removed, the higher the risk for pregnancy, but please talk to your doctor about all of this. The new doctor, that is. If you want me to give you some links for cold knife cone biopsy or trachelectomy, I can do so.