Lower back issue?

So I’ve never had this issue before in a major way at least. But a well or two ago I fell asleep while laying in my stomach and it destroyed my lower back it’s been in pain since it was worse at first and has eased up a bit but it’s still bothering me. I read online that laying in you’re stomach messes with the alignment if you’re spine but I’m not sure what to do it’s been about two weeks and it’s still bugging me and way to help get me back to normal I don’t want this to become a long term issue.
Lower back issue?
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