I know this is stupid but please reassure me that I don't have a blocked carotid artery!

[Raspberri]

Two years ago I started getting really bad sinus pressure, no congestion or anything. Saw ENT, had thorough investigations including head MRI and they couldn't find a cause.

For some reason it went away after a while but has now come back again. I also feel like a squeezing sensation around the front of my throat, kind of underneath the jaw either side. I clench my teeth at night so it's probably due to that. And general stress and anxiety!

I have had health anxiety in the past but thought I was over it. I now have this really strong feeling that I have a blocked carotid artery and this is causing the sinus pressure and weird neck feeling.

I am 40. Low blood pressure. Don't smoke. Slim and fit. Drink in moderation. Cholesterol is normal. Healthy diet.

Please tell me I'm being an idiot?

I don't think you are an idiot at all.
Would it be possible for you to see a dentist about the teeth clenching? Or maybe a physio about learning to relax the tension in your head and neck.

If you search on YouTube there are loads of videos showing you how to relieve sinus pressure by massaging your own face, which might help to relieve you and reassure you that you can control these symptoms.

Thank you for being kind. I will look up the sinus pressure videos. I'm actually going to see a doctor tomorrow about getting botox in my jaw muscles to see if that helps too.