Thanks barmybunting and sazzle.
I was fine right up until the woman said to me "If you had children, you'd understand" and I wanted to throttle her. Or shout at her along the lines of "if I had children I wouldn't bloody well abuse them" or something. But I didn't, I held it together until we were all finished and then went and cried in the loos. She didn't mean to be hurtful obviously, it was just bad timing.
Yesterday was crap but today is looking a lot better, resigned to being on the March bus. Is anybody else doing IUI? It just seems astonishing that a clinic can take Cream of Sperm, direct it straight into your uterus at the very moment that you ovulate, and I still can't seem to catch one!