Heart palpitations last over an hour. Is this ok?

I’m 26 and i’ll occasionally get heart palpitations every other day or so, but it only last about a minute. Today it lasted for over an hour, which has never happened. Should i just brush this off, or is this really serious? I’ve never talked to a doctor about this, even though the short ones have been going on for years. I cant seem to find anything online to help answer my questions.