Core biopsy - tenderness/discomfort flare up after 4 weeks?

I've had a number of core biopsy from a small area taken from my left breast 4 weeks weeks ago and did bleed quite a bit as the suspecious area is low down near my rib cage after the initital week bit of brusing and felt a bit sore obviously and slept in a sports bra, and I've felt fine.

But I started last night with tenderness and discomfort/dragging in the area and more sore to touch, bit concerned that his would flare up after 4 weeks?

I have a date for my lumpectomy end of September.