I'm going to call the Dr tomorrow but I'm really anxious and was hoping for some reassurance. The lump I've found I can only feel when lay on my left side. It sort of hangs down in to my arm pit when I'm lay down. I can't feel it in any other position. There was a feeling of discomfort a few nights ago when lay down and I found it. It seems to be able to move around but it is quite big, maybe about the size of an elongated 10p coin. There is some discomfort but I'm not sure if the lump itself is particularly sore. It's quite odd. I'm trying (and failing) not to freak out but I suffer with anxiety and have quite a few other health issues at the moment so not in the best mental or physical health. Has anyone experienced anything similar and it hasn't been anything sinister? I know two people who have had lymphoma recently so that is really playing on my mind.