What should I do?

So I met this guy on Instagram and I'm 15 he just turned 16 and we are pretty much in love. My parents found out today and want me to stop talking to him. When I said goodbye to him, I got a headache. The headache hasn't gone away and I don't have an appetite and I haven't been able to stop crying and thinking about him. I have felt physically sick. Is this normal?
What should I do?
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