I choose not to tell anyone other than my partner, therapist and PCP. She does not need to worry but you need to get to place of being ok with not telling her until after surgery. Do you have someone to be with you at the hospital it does help. If you worry too much you could always call her this night before and maybe just a one or two night will not tip her off to what is going on. You will have to tell her at some point you know how Granny's can be - they see you getting smaller - how are you going to handle it later? Do you have a hernia that is being repaired during surgery? You could tell her that is what you are having done for now so she will not worry too much. Deep breaths - this is for you and your health nd she will love you no mater what <3 - hang in there!!