I was just diagnosed with mastitis Thursday afternoon & started medication Thursday night. By the end of Thursday night, I began experiencing some back pain on the lower part of my back on the same side as my infected boob. I have only been able to take my meds 3 times so far but it seems as if my back pain is getting worse & not subsiding. Has anyone else experienced this or should I be more concerned..? Starting to worry. Thank you.

Edit: I am taking the medication as directed. I have only been on it for a full day as of today. My question is, has anyone experienced lower back pain on the same side as the mastasis or is this something that is unrelated?