Hi Susie 12, just because they have recalled you doesn't have to mean there is anything wrong. It may be that the mammogram pictures are not clear enough especially if you have dense breast tissue, the reason mammograms are not offered to younger women is that their breast tissue is very dense and as this is your first mammogram this could be the problem. An ultrasound will give a clearer picture with dense tissue. Try not to worry too much - easier said than done I know- and please do not start Googling, your mind will go into overdrive and you' ll scare yourself witless. Good luck, take care Pat x