it is scary of course, and you cannot help worrying about it, but the only answer now is to go and get it done. You wont really stop worrying until they look at it and hopefully say its ok, but it is very good that they are checking so well. You have reminded me that I must ask for a mammogram myself as I do not get any recall now I am 79 and have had two types of cancer, (but not breast cancer) I dont enjoy going , and am sure that no one does, but if we dont do this we only worry in the other was, of what might be happening. So I hope all goes well and in the meantime try to give yourself some calming things to do. I tend to get very physically tense when I am worried and so going swimming I find helpful and doing a little yoga, always keep books by my bed, so if I wake up in the night and cant get back to sleep , put the light on and read, rather than lying in the dark worrying. Hope all goes well