Newbie been referred for lump

Hi all found a lump last night in my breast, straight to the gp this morning and she has referred me and I have an appointment 2 weeks today at the breast clinic, I go on holiday next week for a wee k and just keep thinking how do I get through the days and nights with this hanging over me ? everyone is like "keep positive it may not be anything sinister" and yeah it might not be but I also have to keep in mind that it might be and I need to be able to try and deal with it if that's the outcome . I just wanted to say hello to you all and hopefully chat to people in a similar situation. Xx