I was allergic to strawberries when i was younger i ate one recently and my voice has gone higher by a lot recently. i am male. should i be concerned?

I doubt the causal relationship between strawberry allergy and high pitched voice change. There is nothing to concern.

Allergies can be more dangerous than a voice change, if that's all that resulted, than don't worry. You should see an allergist if your voice continues to be higher, and don't eat any more strawberries until you are diagnosed by an allergist as being allergic to strawberries.