About to commence Tamoxofen

Hi All, I am now 71 and was diagnosed with an ER+PR+HER- 10mm tumor in my left breast in Feb 2026. I had a lumpectomy, and lymph node removed in April 2026. There was no evidence of spread. 3 weeks of radiation followed. I am now about to commence taking Tamoxofen. I am terrified of the possible side effects, and yet am also terrified of the possible consequences if I do not take it. Any advice is greatly appreciated. Jen x