I noticed the following bizarre problem and would like to know whether someone else experienced this.
The following happened a couple of times to me on several dives. When I dive with my head down probably under an angle of 10 to 20 degrees, I sometimes get a weird feeling in the back of my throat. The feeling can be compared to snorring

. My airway seems restricted in my throat. It really hinders my breathing. When I dive with my head higher than my feet it goes away.
I noticed this on a couple of shallow dives, but paid no attention to it. It wasn't a real problem. On a recent deeper dive, I had to bailout because of this problem. I thought I had a massive CO2 hit, but I don't think this was the case.
The last week I made a couple of test dives and found out that it seems related to my position. But i'm not excluding other things like CO2, alergic reactions, ...
Very strange.
Info and help really apreciated.
Thanks,
Peter