Could My Recent Increase In Calorie Intake Be Causing A Strange, Helmet-like Head Sensation I Feel Upon Waking?

Hi Doc! For a few weeks now I wake up feeling like I’m wearing a football helmet. It’s not at all painful and it rarely feels like a headache. I do have a minor sinus issue but I’m not sold that’s it. I originally worried it was from lack of oxygen intake, but my breathing seems fine and it’s never labored. I do stress a lot, but I definitely don’t have symptoms of high cortisol. I recently started eating a lot more food, as in 500 to 1000 calories more daily. I now take in 2000 to 2500 calories. I didn’t know if that’s throwing my body off, like some kind of attempt at homeostasis.