Fresh endo diagnosis and confused/scared

Been ttc for 13 months. Found out I have an endometrioma on one of my ovaries during my first IUI cycle. I had no idea I had endo until that finding. I don't have typical symptoms. Going to take a break from IUI to check if my fallopian tubes are open. Did anyone else find out they had endo in this way? Are your tubes blocked? What can be done if they are?