It has been a while since I started to hear this kind of a white

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It has been a while since I started to hear this kind of a white noise after falling asleep. even tho i've tried to search about it, the only thing that appears to be is the 'exploding head syndrome' (although i really can't compare it to this). sometimes I experiment it while having sleep paralysis.

idk if it's paranormal stuff, but there was this "allucination" where a girl reached me and yelled at me from nowhere and others in which I saw a men wearing an old-fashioned suit right in front of my bed.
Should I worry about this? After two years and a half I'm... getting used to it? but I can not feel totally comfortable with doing nothing

(btw, sorry if I didn't expressed myself properly, still learning)