NK cells was normal in the bloods but 6 times normal in the uterus lining (36% i think was the reading). I just took prednisone low dose between cycles (my choice) and upped to 25mg after insemination (we did IUI) also was on 40 mg of clexane till 20 weeks. The equivalet to you would be 25 mg from day of ovulation till day of pregnanacy test. If we got a negative we weaned back over a week or so to the 5mg till the next insemination...took us two IUI cycles to get success. IVIG isn't used here ocs it is a rare commodity...unlike other countries we don't pay blood donors so don't get the same level of blood donation and a lot of donated blood is needed to extract the IVIG component so it is very regulated so those most in need get it first, i.e. those who are seriously ill with immune compromised illnesses.