Oh, boy, this is a toughie. Let me see... I wouldn't send it on Mother's Day ~ I think that might be a little bit rough for her. Personally, if it was me, I would probably wait until later in the pregnancy. However, if you think she might find out on your MySpace page, then go ahead and tell her on your next update. Or you could send her an extra letter, somewhere around your fifth or sixth month.
And a huge "CONGRATULATIONS!!!" You must be so excited!! A new baby is always such a blessing!
