Worried...

Ashley
My husband and I have been TTC for 6 months. Monday I had a very bad pain in my left ovary that only went away when I sat down. Then it felt like a burning sensation. Then yesterday 3/3/15 there was a little cramping. AF was due on 3/3/15. 3/4/15 there was one little cramp I felt. Does anyone know what the pain and burning sensation in the ovary could be?