What Causes A Small White Cyst On The Tonsil?

I am worried to the point of breaking down. There is a white small bump,cyst on my left tonsil which wouldn t go away.It s been there for two months now.There is a mild pain at my left ear and left throat,not frequent though,now and then.I have fever 3 weeks ago and sore throat which goes away after two weeks and after 4 days of antibiotics. I had swollen neck which subside after three weeks and followed by muscle pain throught my body,especially the armpit which is now gone.For few days I feel extreme tired and had been sleeping throughout. What trouble me now is the cyst on my left tonsil. I am really afraid if it could be cancerous and the off and on mild pain on my left ear and throat. I ve been to 2 doctors for 4× and one doctor told me that it is normal to have the cyst while the other doctor ask me to come back If I feel unwell.I am just unsure what to do or if I am overeacting.It is affecting me way too much to the point of depression.