sounds like you should put warm damp cloths on it on and off then it should bust if its a cyst under your skin to me,and if that dont work go to your doctors.ive had loads of cysts over the years and pre cancerous cells four times to and sounds like cyst to me honey.goodluck,and you should tell your mum even if its hard to say write on paper . ;-) let us know how u get on.kind regards karen.