OMG help please

Chloe

So I was just making my breakfast and I put a garlic herb on it on it out of a jar and after I eat it I went to put the garlic back in the cupboard when I noticed the sell by date. Someone tell me why it went out of date in 2003 and I just eat it 💀💀💀💀seriously will this be fine or will i get poisoned by it or something? I’m not sure if I should take medicine before I have a chance to get any symptoms