DH and I will be ttc later this year. I'm a healthcare student and have had blood tests to check immunity for rubella. I've had two jabs but it's come back as my antibodies are low so I'm not protected. Should I be concerned about this? I work in outpatients (not sure if this makes a difference). I don't know much about rubella other than it's bad to catch it in the first trimester. Is there anything I can do?