There's a birthday party coming up in two weeks time for a family member of my partner. I don't have any issues with this family member or any of his family. I don't want to go to the party. I just don't feel like going. I am down to attend but I am thinking about saying I am ill and not going. I do have a health condition and noone really isn't going to know if I am genuinely sick or not? What do you guys think? Should I pull a sickie for the party?