Poss DCIS returned??

Hi my name is Caron, 17 months ago I had a lumpectomy for DCIS followed by 15 radiotherapy sessions. I was offered Tamoxifen but refused. I have recenlty had more mammogramms and the 12 rods i have in my breast only 2 can be seen, they have said there is something covering them. I have a surgical biopsy on Monday of this week 23rd May as the mass is too far back to do a biopsy with the mammogram machine, they said it is too far back and could puncture my lung or my chest wall? I am waiting now for my results and am terrified. they have gone through my initial scar after the lumpectomy and i have to say I am in a great deal of pain. Has anyone been here in the sme plae on the same journey as me and if so will you talk to me please.

Many thanks in advance x