 [ Symptoms ] could i have mononucleosis again after being better for just two weeks  i got mononucleosis nearly four weeks ago took about two weeks off school and have been back for two weeks now i am beginning to feel symptoms like i did at the beginning last time headache tired and runny nose i thought his might just be a cold but now my throat is starting to hurt i do not have a fever but i did not have much of one last time is it possible it has come back so quickly [ Disease ] hi mono can last from 1 week to 4 weeks and a lot longer i do not think you was really clear of it properly and this is why you still have it but it is a bit of a bugger to get rid of and can keep repeating sometimes even years later so do watch out in future but please get your self well good luck