Men do you have any of these problems with you wife?

My wife and i are married 5 years,now the 5 years arent hell just can be a pain in the backside since we had kids well a kid.i don't know if any of you men have the same problems but ,My wife nags if you dont help out at home and i mean can't shut up nagging its ear bleeding,she is pregnant shes demanding shes REALLY driving me crazy!...I've a son already whos a year old and the last day i did a favor for her and changed his nappy i thought i would get a thanks but noting!..Also i find when you do things ,things that she was complaining about when you do it she still complains saying i did it wrong for instance i cleaned the house she said i did it wrong and was up till one in the morning cleaning i mean what the hell,i don't know what is it with women and cleaning? does anyone men out there have these problems ? mine is driving me mad,but i still love her even if she is a pain.