I recently had this done, they used saline and X-ray to see my uterus and Fallopian tubes. It was slightly uncomfortable but interesting to see. He found nothing blocking my tubes and they are open. He did have a little trouble getting the saline through the left tube. He said he's seen woman have a thick buildup of mucus and this procedure can sometimes clear it out. Wondering if anyone has had this done and gotten pregnant shortly after?