Hi hopefully you are feeling better now as the antibiotics should have kicked in? If not, then please do go back to your doctor, and if there is any doubt at all about it being an infection, ask for a referral.
So my left breast has been sore, like an achy burning sensation, for around 3 weeks now. That pain is around the left side of my breast and slightly under my armpit. Now and then I get a sharp pain and if it's banged it's excruciating.
I can't feel a lump but I can feel the point where it's sore, if you know what I mean.
Also noticed a small dimple yesterday which has gotten just slightly more noticeable today.
I'm 30, had 2 kids, smoker, light drinker, healthy ish eater and get plenty of exercise running round after a 1 year old!