Post-treatment issues

I was diagnosed with advanced endometrial cancer in October 2003.  Because of the advanced stage, I was fortunate to become part of a clinical study and I may be alive because of that.  l had 2 surgeries, radiation and chemo.  Today I consider myself cured. Here is my continuing problem.  The radiation therapy apparently caused severe scarring, the surgeon who performed the vaginal hysterectomy didn't leave much cervix, and I have severe sexual issues.  I have recently read in my research that many women still have the same level of orgasm they had prior to their hysterectomy.  I don't.  Also, when I finished my course of radiation, the nursen gave me the device that she told me to insert into my vagina every day.  She didn't tell me why she gave it to me or what it would do.  The pain I experienced while using that "thing" caused me to stop using it.  Now there is no way my husband and I can have intercourse.  Is there any hope for me?