Mad at my husband!!!!

Husband and I have a bank account together,we agreed to tell each other if we going to buy something or spend money on something we want.... if we need it , no need to tell each other.... I'm not working, I quit my job recently, I'm 37 weeks now. So my husband is the only one to work. I plan working when baby is 6 months... we are trying to save as much money as possible now, because I won't work until.baby is 6 months. So just found out he spend like $50 on betting on a football game, it's like alot of people put 50$ and who wins gets all the money, but it's like more than 80 ppl, seriously, he didn't even tell me he would get 50 out of the bank just to bet it on the football games.. we could use that money for diapers..ughhghhhhhhhh!!!!!!!!!!!!