Well, since you'll probably give birth within 300 days of your divorce, the baby you're carrying is legally your husband's child. How's that for a start?
Your husband is going to be pleased with that, I'm sure. You will be too if he decides to be a pain in your behind and sue you for custody and is then awarded visitation for a child that isn't even his (just to stick it to you and your boyfriend).
Now, I could keep going on and on about all the bad things that just happened because you couldn't close one door before opening another, but something tells me by the time you finish reading this, you've read enough. For now.
(go see an attorney)