Feeling intense pressure inside my head

So, this weird thing keeps happening to me lately—like, I get this intense pressure inside my head combined with this super strange sensation in my neck or the back of my skull. Usually, it just lasts for maybe half an hour and then clears up. It first popped up about two weeks ago, hung around for a couple of days, went away, and then decided to make a comeback yesterday. The thing is, that "pressure" feels exactly like what happens when I’ve been gaming way too hard or wearing headphones for hours on end. I used to only get this if I was grinding for 4 or 5 hours straight, but now it’s hitting me even when I’m not playing—like, it happened during class today.
I mean, I deal with sinus issues and weather changes constantly, plus my neck and spine aren't exactly in peak condition either. Any ideas? I really hope it isn't something major, because honestly, I'm a total paranoid wreck and nobody ever takes my concerns seriously!!?!?!??!!😕😕😕

Wait, what????

It’s probably all in your head, honestly; we have this incredible capacity to convince ourselves of things, so I truly believe the most important thing you can do is just try to maintain a positive mindset.