Brain Tumour can't sleep

Can't sleep and I don't think anyone else is on here to chat  after seeing onc on 25th Jan to now tell me slight change in mass in chest lymph nodes and she is not worried im now been brought back in week later to be told of Brain Tumour GOB SMACKED !!!! Apparently it's been missed, I'm so angry upset.... urgent MRI today sat 4th Feb worried sick and can't sleep