Slight pressure in my head

I was wondering if anyone has experienced a slight pressure in their head after using the aneros. Not painful just weird feeling.
Since the lockdowns I’ve been using my Helix Syn a lot more. I’m having this feeling in my head after I use it. Not sure if it’s from the aneros or not. I’ve been to the doctors and had CAT scans and found nothing. I’m not sure, but I think it only happens if I don’t have an p-orgasm, which happens sometimes.

Also, was thinking of getting the Eupho for more movement. What are opinions of Helix vs Eupho?