No I don't think you are overthinking it but as the urgency is gone I would definetly have genetic counselling. Knowing you have a positive gene might mean the need for additional surgery or not. Also if you do carry a gene it's important for your offspring. Because of family history and my Dad being gone...and the sample was held in Scotland, all 3 of my Dads kids were mapped and tested. So we can be sure he never carried it. They even sent out an original sample and retested mine against it again to be certain. They were so sure I had the gene because of age and the age they developed it.
I had an Aunt who had bilateral breast and ovarian cancer (and 2 others had ovarian) but don't have her known faulty gene. At this stage they believe I'm just the average unlucky 1 in 8.
Talking it over with a counsellor really helped me feel more comfortable. I had the mastectomies and reconstruction. I don't regret it. But I really miss the sensation of my breasts and it does impact on intimacy.
We have a breast reconstruction group you can request to join. Many have included their photo stories. If you would like reconstruction you can plan this as same time as mastectomy.