L.R.
Take a look at the Feb. 10 Mamasource posting by Heather who also had a question about taking away pacifiers. A lot of people responded to her -- you might find answers there.
If your daughter very recently transitioned to a bed she might still need the pacifier at nights to comfort her (you're right not to do too many changes at the same time) but I'd stand firm on no daytime "binks" if you've already begun that. Whenever you cave in on that and give her one, it sends her a very mixed signal and since she's so young she'll only think that getting a bink once means she can get it by crying the next time too. Ignoring the tantrum, even walking out of the room if she's in a safe area and can't hurt herself, can work eventually. Consistency is key (but oh so hard, I know!). Another tactic when she asks for a daytime pacifier: Ignore it and immediately distract her with a toy, game, going outside, etc. Distraction is a perfectly acceptable option at this age!
A thought: If a new baby is on the way you may want to break the pacifier habit before the new baby comes, because if you wait too long the baby will be here and your older child will want comfort and routine amid the big change of a new baby in the house. If that routine still includes the pacifier, it'll be very tough to take it away from her at that time.