Pelvic radiation.

I’m going to be starting seven weeks of pelvic radiation therapy in a little over a weeks time. I’m very anxious about the long term side effects. I was too embarrassed to ask my consultant about it. I had endometrial cancer three years ago, and it came back. After my surgery 3 years ago I wasn’t offered any adjuvant therapy and feel this is why it has returned. Shock menopause has already caused me so many issues, that I’m afraid the radiation will make those issues worse. My relationship is already failing, I feel this may end it. 

Has anyone been through this, can you give me some insight, I’ve been reading up on the internet and I feel like my body is just going to be worse after.