Hi. I am planning a baby, but my cmv igg is high (more than 250), igm is negative. My doctor says i have to delay pregnancy until igg gets lower. Why? what is a safe number? I read it is bad to have positive igm, not igg? I had miscarriage 1.5 months (early pregnancy). Doctors didnt state the reason, but say it could have been because of citomegal.