My husband has a dealer sells car ,thus three days out the week he goes to auctions ..I stay home…

My husband has a dealer sells car ,thus three days out the week he goes to auctions ..I stay home with baby .i don't mind but once in 3 months I get to see my family n that's one family member only cause he doesn't like em ..any who he knew about me going with my niece this Saturday all week and today when I came home he gave me the cold shoulder and said o wasn't fair cause I was out spending money ..I got my nails done spent 20 dollar on that ..and so that he had free time I took my baby with .. Please tell me or some one help me understand what I did wrong

*** we live with his family so he sees them all the time every day !