Yes it's stressful,it's a lot to get used to.Your life changes completely,and your time's not your own,neither's the money.Baby always comes first.I think other halfs seem to take a while longer to get used to that and add to the stress a little.
Personally I don't listen to advice I haven't asked for.If well meaning complete strangers "give advice" I just try to be polite,but it doesn't mean I have to pay any attention to it.Everyone's an expert it seems.I'm sure they mean well.I think it's ten times worse when it comes from in laws and outlaws cos you don't want to to insult his Mum and say she did this wrong or that so you're not doing it that way.Personally I don't care but I think a lot of us don't want to upset the MIL.
That said though,I wouldn't think of any of my babies' first years as being stressful.They quickly become such a big part of your life that you forget they ever weren't there.