Weird Head Feeling?

Hi everyone! Wondering if anyone has had similar symptoms. I’m pretty sure it’s all just anxiety but this feeling is really weird -

I get these episodes that are hard to describe. My head feels like it’s filled with pressure. Not quite a headache (although sometimes it is accompanied by one), but more just this strange pressure and brain fog. The scariest part is that I typically feel like my brain isn’t getting enough oxygen what it is happening, even though I know it is. But then I feel really uneasy until I take a deep breath. Sometimes I need to yawn too to get in extra air. Again, I’m almost positive it’s just from anxiety/stress but it’s such a weird feeling and hard to explain to other people. Has anyone suffered from the same?