Hi There My Mum Found Out That She Has A

Hi there my mum found out that she has a lump on her chest she says shes been touching it and its out of a 100% its 60% painful and has gone redish around that area and its kinda hard aswel... Shes been to the doctors today and they have checked it and said take antibiotics for a few days and see if that works if not then they will have to do further investigation on it

I have checked online for answers and it says it can be anything lumps are quite common and can be cured am jst sat here scared hopein its nothing? Can you tell us abit more please?

Shes kinda got a fever aswel and a headache and it says on nhs it can be caused cus of that aswel like an infection??