I have a pain in my groin area and my lymph node feels swollen. Last month I had a sinus infection and was put on a Z-Pack. I just recently, the start of my new month, switched to Yasmin. Now I am experiencing yellow/green discharge. I had an ultrasound down last month due to the same pain and I had fluid the in area. My ovaries are fine. Could this fluid make my discharge a different color?