5DPO cramping

Amanda • Tue, Dec 09 • My husband and I have been married for 5yrs. We`re currently expecting #3 and couldn`t be happier!

Got a positive opk on Dec 1st (late at night) -- had a super positive on the 2nd. Guessing I o'd the 3rd. Laying in bed tonight cramping mildly. Can't pinpoint it to one side or the other...just kind of a dull ache. AF is due Dec 17th. Is this possibly a sign? Anyone ever have this happen? What do I chalk it up to? I'm super anxious for this TWW to be OVER!