Hello, I'm a 28 year old female, I found a baked bean shaped and size cyst just above my toncil, I think I had either a virus or a bacterial infection which caused a cold and cough about a week before I noticed the cyst, although the cyst could have been there before I just didn't notice it, it's not painful and it's not causing me any symptoms apart from severe anxiety. No swollen glands or anything like that. 

On a side note I'm very skinny and have lost my appetite the past few years, I'm always tired but to be honest that's nothing new I have felt fatigued my whole life I don't really have a history of sore throats or anything like that. 

This may sound stupid but I have convinced myself that it's the worst thing because two different gps said they never seen anything like it before, they sent me away with a 5 day course of antibiotics which I have now finished and nothing has changed, and I have been referred onto a specialist, im just hoping someone here has had a cyst or something similar, and can put my mind at rest, my appointment isn't for 2 weeks and I'm completely obsessing over this. 

Thanks for any help or information anyone can give me.