You are not responsible for his moods, or how he deals with them. He needs to be working with a professional and to be taking his meds if they work, and he needs to be responsible for this. You can have a good day without him. And once you are a mother, do not let his mood stop you from having good, healthy times with your child. (If you don't work now, one option for a young mother is to work at a place like the YMCA where pay is not great but you gain access to lots of programs, free as a worker, for parents and children; working in a day care or pre-school program can also be a good fit.

Whatever happens, do what is best for your child and that may be not being with him on a daily basis.