I've just found out I'm pregnant but don't want to tell anybody the news until at least 12 weeks which is about a month away from now. My due date is around the date of my friends wedding in September. She wants to get her final numbers sorted so I need to RSVP. I won't be able to commit to going due to it being about 4 hours away. How do I decline without telling her I'm pregnant, as I'm not ready to share the news yet? Cant see another way around it :(