With my first pregnancy my blood work came back that I was not immune to Rubella, even though I was fully vaccinated as a kid. So, I got the MMR before I left the hospital after the birth. Now I'm pregnant with baby #2, and I just got my blood work back and it says I'm still not immune. I only got the booster a little less than 19 months ago. Has this happened to anyone else? I don't really want to get the MMR again, because obviously it doesn't seem to work on me. Has anyone refused it?