Hi H.,
My son was almost 3 1/2 when my daughter was born. While I was pregnant we took him to all the doctor visits, including the ultrasound. That was a mistake, after the ultrasound he had nightmares for a couple of days. He did like the doctor visits though. He'd get to help measure Mommy's tummy to see how big it was getting, and also use the Doppler unit to find Baby's heartbeat. The first time he did he face just melted.
I had done a counted cross-stitch birth record for him that I gave him at his first visit in the hospital. Being a six year old boy kid, a few months ago he knocked it off his wall and almost broke it.
Yes I was sleep deprived all over again after my daughter was born. But I also had my little man to help me by getting diapers for the baby or other small things that he could reach. We were in the process of potty training my son, and almost had him there when she was born, so he regressed for a few months and we had to wait about six months to try again.
In some ways it was harder having a newborn and a 3 year old, but also easier. The hardest part for me was naps. With just my son if I was tired I could nap when he did. With two of them and naps being at different times it was harder. As soon as I could I got them on the same nap schedule, at least in the afternoon, and that helped. And then of course shortly after I got everything the way I wanted it my son stopped taking naps. Go figure.
When your new baby comes your 2 year old will regress in behavior and also (most likely) become super needy. Expect it. To your two year old there is a new interloper that is trying to take all of Mom and Dad's attention. Don't listen to people if they tell you that a two year old can't understand what's going on. She knows more than you'd give her credit for. Talk to her. Reassure her that this new screaming, squalling *thing* is not going to take you and Dad away from her. While she's so little she's going to need some more attention from Mom and Dad, but now there's a new person in the family to add *more* love for everyone.
One thing I did while I was nursing was let my son snuggle against my shoulder. That way he got some special time while she was nursing.
Sorry for the length and if you have any more questions send me a message and I'll answer them as best I can.
Hope this helps,
Melissa
P.S. My kids are now 6 and 3 in March and they're the best of friends, to the annoyance of my son. Also, the first words out of my son's mouth in the hospital after being away from me for a couple of days: Can I hold my baby sister now???