Ashlee Simpson Rushed Her Engagement Because She's Pregnant?

Newly engaged Ashlee Simpson may have 'rushed' her commitment to rocker Pete Wentz because she's pregnant, reports Us magazine. Ash and Pete began dating in late 2006 and an insider revealed:

"They are ecstatic and can't wait to be man and wife. They will be getting married before the end of the year."

Pete said, 'when you find someone you think is your soulmate, it's inevitable.'

Ashlee really doesn't appear to be showing, but do you think she may be pregnant?