I wish I didn't know that there are three entire threads on a public forum about a wife's maybe pregnancy, every detailed in and out of her menstrual cycle, and her struggles with PMS.
Frankly. In better taste would be to wait, and if one has happy baby news to announce then announce that.
And maybe consult one's doctor, and one's spouse's doctor, not Muppet Central, when wrestling with such tasteful issues as late periods.
There. That's what I wish I didn't know.