I went for IUI on 14th day of my egg rapture now its 26th day. I am having lower abdominal pain and light pink dischage for once. What does it mean?

Do know. May mean that your menses is about to start. Iui's only have a success rate of 9% per cycle. Therefore, you most likely are not pregnant. However, check a pregnancy test if you don't have your expected menses.