Indentation on top of left breast

Hello all.

Since 19th November I have been in alot of pain with my left breast and armpit ( thought it was related to covid)

Anyway fast forward to 3 weeks ago I found a large indentation on my upper left breast. Went to GP who confirmed their was a dent with no lump. Sent a emergency referral which now I have been told it's a five week wait

The pain is off and on. I also get a burning sensation in the breast that goes up to my armpit. Don't have anyone to talk too. Hubby has been ok but we are struggling to stay positive