Do I really need IVF?

It seems to me that you're a really good responder to medications, and the reason your RE is considering cancelling your cycle is because you have too many follicles for an IUI, and you're at risk for having multiple births. If you're at an IVF center, I've sometimes if the patient is up for it, converted these cases to IVF. However, the center must have the capability to perform IVF with an embryologist ready and willing to manipulate the eggs and grow the embryos in an incubator.

It may be better to cancel an IUI cycle with so many follicles in your case. If you are ademant that you desire to try again with an IUI, injectables can be tried again, but it is tricky and sometimes takes a long time to weed out only a couple of follicles with the injectable medications.

Sometimes in patients such as yourself, who on a low dose of injectables you overstimulate, yet I'm assuming don't produce follicles with either clomid or letrozole, IVF may be the answer since we can avoid multiple births by transferring only one or two embryos. What you do have to remember is that given the way you respond to medications, you have to hang in there, as it appears that your prognosis of having a baby looks extremely good.