I had a lump under my arm for about 2 months.  A doctor was going to do a biopsy and then decided not to.  I kept cleaning the area well and it finally went away.  Then a sore and painful rash appeared in thes same area.  It was there for about a month and again finally went away.  Once more, my doctor just told me to keep an eye on it.  Now, I have some soreness in the muscles from this same arm.  Should I be worried and consult a different doctor?
Hi. Thanks for your query and an elucidated history. Definitely yes, You should consult another Doctor