As in, "I'm __ weeks prego!"
(Like it's so hard to say "pregnant".)
Do you know what my first impression is when I hear that someone is "prego"?
One of these:
Or possibly some of this:
Or even those two things together. GROSS.
So, if you come up to me and tell me excitedly that you're "prego", don't be offended if I cringe. It's not at the thought of you procreating but at the thought of waffles covered in tomato sauce.