Help....am i being a crazy person

Hey all. I work 40 hours a week. Plus I have 2 younger kids (my boy just turned 3 and my girl is 10 months). I am just frustrated. I work 5 days a week. I typically take one, if not both kids to daycare all 5 days. I am the one who has to get kids changed, fed, packed for the day. Once we get home, i am the one feeding the kids,playing with them, getting them ready for bed. Today, my son refused to eat unless he was sitting on my lap. My daughter is screaming until i pick her up. My husband finished earing dinner then after about 5 minutes asked if i was done because he wanted to watch tv....i barely touched my food because i am trying to feed 2 kids. My son threw a temper tantrum like 30 minutes later. I am trying to reason with him. Nothing helped so i just walked away for a minute so i didnt explode. My husband then asks if i am going to go grab my son so he can watch tv. Then about an hour or so later, we are getting ready for bed and my son is throwing another fit because he wants to watch my phone. I told him no. My husband walks by as i am literally holding our daughter, trying to get my son off the floor to go to bed, and he just walks by......no help, nothing. I am freaking exhausted with literally doing everything for the kids plus wirking plus not sleeping through the night because my daughter is still not sleeping through the night at this point. I am really trying not to explode on my husband but i cannot do everything