Do I have a right to be upset

I'm in college for nursing. I'm on my second year. I have Fafsa and my boyfriend pays the other several thousand for me. He has a child with his baby mama and their son hasn't been doing well in preschool. His therapist recommended they send him to a Montessori school. The ones in our city are really expensive and he told me if ye sends their son to a Montessori school he won't be able to cover what Fafsa doesn't cover. I was already really mad about that. His baby mama wants to send him after winter break. At my college we pay by semester, so that means I won't be able to go next semester. I asked if he could at least wait until next school year, but he's saying his baby mama doesn't want to keep him out if school that long. I have no way to cover the difference and I'm upset that he's pretty much leaving me with nothing