Am i a slave in this relationship ?

My husband and I have been married for 4 years. We gave a 1.5 yr old and 5 month old. I have worked my whole life but after getting pregnant with our second I am currently a stay at home mom. He does not want me to work. He wants me home for the kids.

My days go like this: wake up, take care of kids, make breakfast for him to go to gym for 2 hours. He comes home to a bigger breakfast. I gave his lunch ready, lay out clothes, have vitamins ready, then he gets all dressed up for work. He works 12 hours when he only needs to work 8. Comes home at 1am where I have his dinner ready and I take care of the kids all night. He never helps me with kids. Doesn’t to anything at home. All he cares about is work and gym.

Am I slave or this is how it should be since I’m not working?