On the flip side, I tested off the charts high for NK cells and told I'd never be able to conceive on my own, and with IVF would need IVIG before and during pregnancy. Also told I would need Lovenox for some blood clotting issue (but later a high risk OB said that test result was related to blood clotting in MY body, and would not cross the placenta, and he was right). Well, the month before my cycle I conceived naturally and the RE couldn't explain that one. He literally said, "You shouldn't have been able to conceive at all". Well, that conception is now 4 years old. With my DE pregnancy I needed nothing at all. So what I was told were serious immune issues didn't even exist. I know that many women do have problems that need treatment, but I think it's not always clear.