Knj822

I am wondering if anyone else experiences this. When I stand from sitting (mostly, though it has been happening with just position changes also) after a minute or 2 I get a squeezing pressure that starts in my chest and creeps up to my neck and then my head. It feels like an intense crushing that pulses with my heartbeat. It can cause me to double over until it passes. I have seen a rare post on boards of others with similar symptoms but they are always like 10 year old posts I have had 2 tilt tables. Both show my bp drops drastically. I have had qsart and cardiac autonomic test which are pending. Just curious if anyone else has this and what they are told it is. I also have a meningioma so kind of trying to see if more autonomic problem or meningioma symptom. Thanks!