@jgallagher04921
At a Breast Cancer Support meeting last night, Dr Carol Kuhle presented on the topic of Cancer Survivorship and sexual issues. The presentation was not recorded, but I will share what was discussed about orgasms to help answer your concerns. You should follow up with your provider for additional information.

Orgasms are affected by both physiological items (self-image, relationship, etc…) and biological factors.
The biological part involves:
• Pelvic floor - the muscles that help with blood flow and vaginal contractions during sex and orgasm.
• Nerve endings
• Blood Supply

When your body has less estrogen because of menopause due to age or removal of ovaries, the vulva becomes thinner, thus reducing blood supply.

In addition, some medications affect both libido and ability to reach climax. She also mention alcohol will reduce your ability to reach orgasms. One drink may help you relax, but after that it can have a negative effect.

If you have access to a Women's Sexual Health Clinic they can help with sexual problems due to menopause or cancer. At Mayo Rochester, the Menopause and Women's Sexual Health Clinic is part of Internal Medicine. The demand for appointments in this area is very high. A good gynecologist should also be able to assist with sexual problems also.

Mayo Women's Sexual Clinic has produced videos that might be helpful:
https://www.mayoclinic.org/departments-centers/menopause-womens-sexual-health/overview/ovc-20487915
Have you talked to your oncologist or PCP about your concern?