Skin lesion and pain in breast - referred to Breast Clinic ☹️

Hi all, I wonder if you could help me ease my fears. For nearly four weeks now I have had a very unusual skin lesion above the areola in my right breast. The lesion initially looked like a small bite so I took no notice of it, however, as the weeks have gone on a became aware that I was constantly grabbing at my breast to scratch it. I didn't realise that this lesion was itchy to start with but now I am and it's incredibly itchy and painful. I have not been able to compare it with any other lesion I have seen and this one is about the size of a flattened pea. It is raised and red, sore to touch and scaly on one side which has since rubbed off. I have also had incredibly sensitive nipple on this side, to the point I find wearing clothing uncomfortable. I also have localised tenderness and occasional throbbing pain directly above it and deep in my breast. I have pressed the area, which was a sharp tender discomfort and have found the whole area feels very nodular and raised. Some areas feel harder than others and I can also feel a deep longitude hard lump and a small pea size lump. I have also had intermittent pain radiating to my armpit which started in a January and no lumps found when I saw my GP. I do not have any nipple discharge or generalised inflammation. My breasts still look similar but both my dr and I can feel this unusually dense area. She is not sure if the two are connected. I have been given cream to see if it that helps. If not then I have to have the lesion removed. I'm not sure if she is thinking it may be a skin cancer. If it is could this cause problems within my breast of could something within my breast be causing the lesion. I'm so worried right now. I would appreciate some advice if possible please. Thank you