Unsure about surgery choice

I was diagnosed in September 2016 with stage 3, grade three triple positive multifocal IDC in the left breast and what was referred to as "abnormal geography" on the right side. I also had a known lymph node affected on the left. I was unable to have radiotherapy due to pre existing medical conditions and had chemo before a bilateral mastectomy...my choice for both to go.I am now NAD (no evidence of disease) and will be on Letrozole for at least ten years. Each of us is different, but in my case the left had to go anyhow. If I had been given a choice between lumpectomy and the full monty, I would have made the same chioce. The idea of a surgeon cutting around a tumour, and then later pathology showing that clear margins were not obtained gives me the heeby jeebies. As a lay person, I would be scared that all that bleeding into the rest of the area, which still has cancer in it and the swishing about to my entire body, would frighten me. I am sure a completely unfounded fear, but that's me.