Struggling

Lexi
Is anyone having trouble adjusting to second time mom life? Newest is barely 5 days old and it seems like all three of us (myself, two year old brother, and new baby) can't accomplish anything without crying. I can't feed either one without the other crying or pick up. I can't walk down the stairs because 2 year old who happens to be close to 35 lbs also wants carried down. He's fallen down two stairs once so scared of them now. And I'm just terrified this isn't going to end. My husband thinks I'm just being a baby about it but he went back to work the day after he was born so wasn't ever around both at the same time. I need advice.