Quoting Devil Duckie:" that whole "safe point" is a bunch of crap. Something can happen at any time and you might as well have been honest with people instead of keeping it a secret. "
I do agree with this to a point. I think telling a few close relatives or friends, so that if something DID happen, you'd have a wonderful support system around you. Plus, if nothing is going wrong, you have a cheering section for every week you get through. I know for me, every week is an accomplishment and worth celebrating.