Hysterectomy Support Group
A hysterectomy is the surgical removal of the uterus, usually done by a gynecologist. Hysterectomy may be total (removing the body and cervix of the uterus) or partial (also called supra-cervical). Although there are conservative alternatives, hysterectomy is performed for uterine fibroids, pelvic pain, pelvic relaxation, heavy or abnormal menstrual bleeding, and cancer.
It sounds like your doctors are giving you the run-around. It seems like your gyn could manage your hormone needs but may not want to take the responsibility due to your cancer history. Oncologists oftentimes recuse themselves after treatment is completed. But many gyns are known to do that too after hysterectomy. Mine refused to see me 4 months post-op when I was desperate for help. It sounds like this is a different gyn from the one who did your surgery though (based on your other post). Your primary care physician may be an option for Rx'ing hormones.
It seems if your BC wasn't estrogen receptor positive that you could take estrogen. The estrogen-only arm of the WHI showed lower risk of BC than the control group. It was the combined arm (estrogen + progestin) that showed a slightly higher risk.
It looks like you had a pulmonary embolism so that would be another possible contraindication to HRT. However, I think a doctor who's up on HRT would allow transdermal just not oral.
Hope this helps!