I m undergoing infertility treatment since 2009.I have tubal blockage both side. But I conceived with iui after doing laparoscopy. But baby abort in 3 months due to cardiac activity absent. Then I did ivf . But stillbirth. I have gone through 3 ivf. Everytime conceived but growth stopped . My doctor now suggested 4d scan . Can 4d scan detect tubal patency. She told that we try normally this month . After ivf treatment it is possible in my case.