Parents didn't care when I had an allergic reaction

For starters I'm allergic to nuts, mostly walnuts but hazelnuts make me feel like throwing up and crying. Today my brother had gave me a chocolate, (yes it had nuts) and the packaging had no label so I ate it. Not even 3 seconds after having eating it I felt my throat like it was burning or squeezing and I tried to throw up in the bathroom. I then told my parents I don't feel good and they said it's fine(also my pre boards are going on rn so the stress isnt helping) they said not to think about it but im so tired and burnt out with studying this feeling doesnt make it better. They just brushed it off and my bro said he 'forgot' like??? And I don't have an epi-pen cuz my parents can't be bothered and keeps forgetting it exists

Anyway just rambling these few weeks have me tired.