I'm only a few days away from turning 29 and about two week ago my left brest started to be tender. I ended up real sick went to the ER and they told me I had a severe UTI. I went home and took the meds they gave me. My breasts was still tender but I thought nothing of it since my period was about to start. But now all of that is over and the pain is now in my armpit. I don't have insurance to go to a Primary care doctor, should I just go back to the ER?