Worried about boyfriend

Adri
Ok tonight my boyfriend told me he has to get a couple shots every 2 months or he'll die. Idk why. he told me he doesn't know. Is he lying to me? could he know? He said it's either for his adhd medicine or for his chest pains which I've been around for. They get pretty bad. I'm starting to worry because if somethings terminally wrong with him id wanna know. Can anyone help me figure this out?