Hello, I had the rubella vaccine last month, it will be a month on the 7th of August, the doc has put me on clomid but he said I cannot use it till I have a blood test to make sure the rubella vaccine has come out of my system.. So can anyone answer me if I can a blood test this week or has it got to be after the 7th as it will be a whole month since I had the rubella vaccine.