the engine got loud? as in the RPMS went higher on their own? explain in detail whats not normal. that was the most vague explanation ever.
as stated above, check your oil by pulling the dipstick out. if its milky (has antifreeze in the oil) then you blew the gasket. if not its something else. blowing a head gasket isnt bad if you catch it early, really easy to fix
im by no means a professional mechanc, but i do toy around with some cars. check your oil. it takes three seconds. or open up your cold radiator & resevoir and see if you've got any antifreeze. this exact same thing happened to one of my vehicles a couple of months ago. tow it to a shop so you don't fuck anything else up.