Stay at home mom question ..

All my life i been independent had my job my car and my little apartment then i met someone we had a baby and my mother was able to care for her while i worked then she moved away and we had another two kids so three in total so my SO insisted i stay home after the second baby and its been almost two years being a SAHM . Im tired and dont get to go out with friends or none of that while he can. im literally home everyday and on the weekends while he hangs with the boys weekdays and weekends! While “hanging with the guys”he met someone and had an affair i found out when the last baby was born “shes 10 weeks old now” we decided to work it out but is it unfair to ask for atleast one saturday out of the month to see my friends?! He refuses i go out and im so damn tire you guys have no damn clue.