Hello, lovely Lacies, just thought I would park myself here. Your stories are just what I need to read at this point. 
Found a lump in my right breast on 18 December, biopsy taken on 22 Dec., breast cancer stage 2, ER+/HER- confirmed on 4 January. Biopsy of lymp nodes was clear. Did blood tests pre-surgery, discovered "higher" liver readings (forgot to tell them that I had been taking aspirin for about a week due to cold/sinusitis), sent me for a liver ultrasound where everything was fine, to say I was crapping myself is an understatement - I was royally shitting my pants over & over again.
24 hours before my surgery on Friday (3 Feb.) I got the results from genetic testing - I carry the bastardly BRCA2 gene.
So, immediately I started having an impending sense of doom & that everything was doomed. Had lumpectomy & sentinel node biopsy as planned on 3rd. Awaiting results on 16 Feb. Again, crapping myself over and over again.
Whatever happens bilateral mastectomy (and a bit later, oophorectomy) are on the cards. Curse you, oestrogen and genes!
The original plan was to do radiotherapy for 4 weeks & hormone tablets for years. On Friday (after the operation which is when the consultant found out that I am BRCA2 positive) the consultant was muttering about having to do bilateral mastectomy within a month!!!
Am phoning the clinic tomorrow to get a clarification and a bit of peace of mind (hopefully he didn't say it because they discovered something more horrible during lumpectomy - he did say the two things - bilateral m. & lumpectomy were 2 parallel things). He told me that everything was fine post-surgery, didn't mention any other possible/unexpected finds. Wound healing well, bla, bla.
Oh, yes, and I am 44 with a DS who is almost 5.
Bastard genes, bastard cancer!