Hi. I am a 20 year old female. I was recently treated for a UTI which lead me to have a yeast infection. I since have been treated for both. I was also tested for STDs, as I am very afraid of them- twice. All results were negative both times. I am still having a burning sensation however and having some pain on the left side close to where the back side of the pelvis bone is if that makes sense. I never get this pain on my right side and it more of a dull, throbbing pain. The doctor said my lymph nodes were fine and I'm going to get checked again next week- just wondering if you had any ideas?