Should I be upset?

So I’m 19 years old with a 10 month old and my boyfriend is 20. Since we’ve had our son my boyfriend has hung out with his friends 3 times all day long. Tomorrow he’s going out shooting and his going to be gone all day long. I haven’t had a fun night since my son was born. I’m at the point of crying because I’m going to be home alone AGAIN ALONE. I just to go out and have fun myself. I’m an at home mom and I go to school when I can.