Oh dear. I'm sorry. I would tell you not to worry because Labs are known to get lumps. Dasher has quite a few fatty ones on him. The only thing that concerns me is you say the size has changed in such a short time. I hope it's nothing serious and she'll be ok. I don't blame you for not going if it is something serious. I hope it won't have to come to that, though. I'll keep you both in my thoughts and prayers. Give her a hug from me.