I am a 28- year old healthcare worker. I already completed the recommended doses of MMR when I was a baby, according to my mother, but I do not have my baby book to support this claim. So, my hospital gave me a shot of MMR last year, 2016, because I could not give them supporting documents of my vaccination. Today, 20 July 2017, I was given a shot of MMR by my private OB-GYN because I forgot that I was already given one last year. Should I be concerned about this? Will this be harmful to me? Thank you.