Ok first of all...you look really good.
Secondly...I would cut it shorter some (few inches), but not drastic. Preggo hormones are bad and you will overeact if you don't like it. So I say somewhere in the middle of what you have and what the photo looks like. Definitely lightly layered and some of the length taken off. But I would NOT go for a bob right now. Trust me preggo girls always go through this, its like some sort of hormonal induced haircut thing!
You need to read Girlfriends Guide to Pregnancy...seriously funny and lots of good info including the preggo haircut dilemma.
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