<s>[INST] I ve been having a dull, but sometimes sharp pain and a knot in the left side of my pelvis. I have a history of HPV and vaginal cysts. Got an ultrasound and they couldn t see anything due to a large amt of gas bubbles. The pain and weird round ball like swelling comes and goes. Gyno suggests a laparoscopic to check for endometriosis :( thoughts? [/INST] It could also be a lymph node enlargement due to infection. It also has such presentation - On and off with the infective etiology. Get an USG done and check for it. Whenever infection is there, lymph node enlarges. </s>