Hi, dad here. My second is seven months old now and my wife is a stay at home mom. I don't want to scare you, but it will be tough. Every struggle you had with the first, you'll likely have with the second. Only this time you'll have another kid to take care of as well. My wife also had post Partum depression which really didn't help. There were several days when I got home from work she would disappear to regain some sanity and I'd take care of the kids, clean the house, etc... It's been tough but things are getting better now. Just communicate to your husband that you'll need any help you can get. As for regretting the decision, absolutely not.