Is it possible to have had a blood clot that would not be detectable by a vascular ultrasound?

An air emboli could be undetechabled. Anything can be possible in the medical profession. That was the first thing I learned in this field.So..., it very well could have.

Thank you IntimatEvolution. That is still more than what the docs gave me. They suggested it could have been a muscle spasm, but I have had plenty of those to know what that feels like, looks like and acts like.

Not to mention, it doesn't make any sense for my calf muscle to only spasm where a large vein is located. Also, I'm 7 months pregnant, and it looks like Air Emboli do happen on occasion during pregnancy, so you could be right on about that. I'm gonna keep researching that and see what's up.It's hard to know what to do, when you aren't sure what happened, lol.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.