You were either trying to get in or out of your physical body to astral travel.
This paralysis or suffocation symptoms that you feel ( like someone is sitting on your chest)is called projective or astral catalepsy.
catalepsy may occur before or after the projection. Usually, it happens as follows: the person wakes up during the night and discovers that he/she cannot move. It seems as if an invisible force is holding back all his/her movements. Desperate, he/she will try to scream, but this is useless. Tries to open the eyes, but this too is impossible. Some even create subconscious fantasies, imagining that some spirit has taken possession of all his/her movements. This catalepsy is benign and may lead to a projection if the person remains calm and imagines himself/herself floating above the physical body. Do not be afraid or anxious, and the projection will take place. It presents no danger whatsoever, on the contrary, it is totally harmless.
Therefore, if you should find yourself in this situation during any night, do not try to move. Remain calm and think very firmly of leaving your body and floating above it. Do not be afraid or anxious and the projection will happen.
In case you do not want to take the risk and wish to regain the control of your physical body, all you have to do is to try to move one finger or an eyelid, and immediately you will recuperate all movement.
Hope this has helped.
Peace, Prosperity, Health and Happiness
Starr
