Chellie, at least you have some answers now that you kow there is a blocked tube. My advice would be to only proceed with IUI if your clinic can confirm through internal ultrasound that the primaryt follicle this month is from the left ovary. The last thing you want is an ectopic pregnancy - which is entirely possible if a follicle from the right ovary produce the egg that is fertilised.

My personal experience was that ovaries produce lead follicles alternately each month, although we did have one month where we had two on one side and one on the other.

In Dr Miriam Stoppard's book Pregnancy, Comception and Birth, she describes a proceedure called Tuboplasty, which sends a tiny balloon into the blocked tube. It is inflated, hopefully clearing the blockage and voila, tube is good again. However, with my own tubes somewhat dodgey at the beginning of my journey, nobody offered me this. You might fid a laparoscopy is ordered next - where they send a camera down the tube to look closely at the problem. Ask about the tuboplasty - just to put it out there. Let us know what happens.

OP.