My mother meningioma surgery done by 12 days ago, after surgery weakness, and tiredness is okk, I can under stand, but fever is also coming from last 12 days, fever is come in evening not morning or night, after taking dolo tablet fever is go away, but next day fever comes back in evening, these happened last 12 days, but tumour is fully removed, that is non cancerous, should I worry about fever is normal or serious please help doctor what should I do.