red rash comes and goes - anyone had it?

 Sorry for making second topic but this is very important for me. Like I wrote in my first topic - my redness came one day quite sudden, it was very itches, burns, litlle warmer (not very hot) and very large (less then half was on my body,and more then half on my brest in lower part) it was pink/red, very regular oval shape.I only used ointment for babies (wich I'm usually using for my younger daughter) and after one day redness was much smaller and less red, after two days it was little and light brown and at the end skin descending from this place. After 3 days there was only little sign and later there was no sign. There was no orange pill, no swelling. The only one thing - that brest is a little bit larger then it was. Very little and it is still like this.

After 4-5 weeks redness came back. Sudenlly - like before. I used the same ointment and next day I went to the doctor (redness was much smaller again) and he told me it is just allergy for detergent or too tiny bra. He gave me ointment with steroids and vitamin A. One day later redness was even smaller and next day smaller and lighter, now it's almost gone. I feel itches in this breast, little pain under breast (where there was a rash) but my breast is no worm, it's soft, looks normal as usually.Only little biger then it was but it's hard to see for the doctor beacuse this breast was little smaler thet the other before and now it's the same. So I can see it's little biger, but for doctor I have very symmetrical breasts.

I know all symptoms, but I'm looking for answer if  anyone had redness/rash which came and comletely gone and back after few weeks and gone away again.

Yestrday I was at the oncologist. He told me that it can't be IBC because in this cancer redness never goes away and comes back. I have no enlarged lymph nodes, I have no redness now. But still I feel uncomfortable beacuse that breast itches, and a little bit hurt. It hurts under my arm and shoulder (not very much but I feel it almost all the time) And why it's a little biger now? Why only one breast? 

On Thursday I have an appointment with another oncologist - a friend of the family (old friend my mother in low) I think he can hear me more closely. Maybe if I'll tell him that there was examples of the redness disappears and return, maybe if I'll print for him  examples of patients with these symptoms he give me a referral for biopsy. In Poland I can do biopsy in private clinic, it's even not expensive but I need a referral from the oncologist. I have to convice him! Mybe it's really nothing serious but what if it is?? 

really sorry if my english is strange and difficult to read an if there are grammar and spelling mistakes - I'm doing my best

Please if you had simillar symtptoms - answer me!

Aga