hi i'm concerned i have been feeling unwell now for the past couple of months. i have a lump on the left side of my neck just below my chin next to my wind pipe. i feel like there is something pushing against my throat and when i tilt my head forward it is sore. i am feeling incredibly tired with sore limbs and spells of dizziness when i nearly faint out. i am a normally active person go to the gym run etc but have been abke to for some time. i feel that there is something wrong. i mentioned the lump to the doctor he gave my antibiotics and said it was maybe a gland but i returned this week after some time as it has got bigger and im worried. some days i feel ok and think that maybe i have a virus but then i get hit with this tiredness and end up in bed as it is so intense. have you any advice thanks