My DS13 months had his MMR 10 days ago, initially he seemed fine however after 5 days started to develop a very high fever (39 plus) and became lethargic, off food etc. Now 5 days later he still has a v high temp (39.8 this morning) and since yesterday he’s covered in a measles rash. Is this normal? I did take him to the doctor yesterday but she said she hadn’t heard of an MMR reaction and that it was just a virus? He still had a high fever whenever the Calpol or Nurofen wears off.