Hi, newbie here

Thanks everyone xx Looking for a bit of advice now please.., so after being told I had LCIS, the Doctor went on about the possible next steps I could take to reduce my chance of getting BC down the road. He mentioned Tamoxifen and also more drastically a mastectomy as a preventative but of course he also said now that I’ve had screens, and now having 12monthy mammograms from now on, my chances of catching anything would be early and curable. Now my dilemma is that being my sister had BC at a young age of 43 and with my LCIS, he suggested seeing if my sister would get gene testing done and if positive, then getting tested myself. He said atm my chances of getting BC are currently 20-25% but if I carried the gene it would be more like 50%. What would you do? Would you just carry along with life and be vigilant in getting checked or go down the path of genetic testing and then decide from there? The Doctors had their meeting this morning discussing patients have called to see if I would come in for an appt to discuss my options.... I’m just so torn! I’m scared of the side effects of Tamoxifen, at 42 I feel I’m not ready for all that comes with it... I’m celebrating that I’ve been fortunate enough to have a clean bill of health but at the same time I’m pondering of what will come next... arghhhhh