I just heard a noise outside what should I do?

It’s currently 3 AM and I’m just laying in bed because I can’t sleep and I heard weird moaning noises it sounded like coming from outside my window. It only lasted for about 20 seconds and then stopped and I haven’t heard anything else in almost 15 minutes but I’m terrified because it scared the heck out of me. I don't know what to do, if I should just try to sleep or stay up scared
I just heard a noise outside what should I do?
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