Talk to Rheumatologist on Mouth Sore Knee Joint Pain Lower Back Pain

mouth sore since two weeks... sensitive teeth... dry mouth..edges of tongue hurt bcz of dryness . extreme thirst... lower back pain... knee joint pain... pain under right side of chest... delayed cycle for one month... two yellow bumps on left breast... sensitive skin. no rash but tingling n itching... I became 58 kg from 52 kg since last three months