How do I cope with hormone therapy side effects and fatigue during breast cancer...

I was diagnosed in July, thought to only have had 1 small tumor after the lumpectomy the tumor was a little more then twice the size and a second one was already there. Had 4 lymph nodes removed which were negative. I was still stage 1a with ER+ and HER-. I have had to wait on my radiation because I have a pacemaker which I just had removed, my doctor said it was safe because I’m not pace dependent. I started my medication early since I’ve had to wait for radiation. I’m in my second medicine Anastrozole was very hard on my stomach, I’m now on Exemestane and it’s not any better. The joint pain is so bad and I still can’t eat much. I’m trying to find how to deal with the medicine for the next 5 years. I fear the recurrence, it runs in our family. My radiation finally starts in the next 2 weeks. I was also diagnosed with Osteopenia after my bone density scan. I’m only 52, so now I’m on so many vitamins plus all the rest of my medication. My hormone levels came back post menopausal, they were extremely high. I had a hysterectomy at 32 for precancerous cells in my cervix. But still have my ovaries. This whole roller coaster has been hard, I was a very active grandma of 3 grandboys just 6 months ago. Now I can barely play with them. Always tired, in pain, no energy. And still working but even that gets hard. I’m on a very healthy diet. And cut out everything that is suggested. If anyone has any suggestions or advice on how to get through this I would be so appreciative.