Hello about 7 weeks ago I noticed a small round lump (the size of a 10p) on the underside of my left breast. I didn't think too much of it but kept an eye on it. The bruise developed into a red purple bruise. I have been referred to the breast clinic after trying a weeks antibiotics which didn't do anything unfortunately, but now have to wait 10 days for my appointment and I'm driving myself insane with worry. I wondered if anyone has had similar experience and it turned out to be a cyst or anything else. It feels round and smooth, the lump is attached to the skin rather than deep into the tissue. I'm so scared this could turn out to be something bad.