we aren't doctors on this site...so this is just my opinion, whatever is causing this to happen to you has gone beyond 'mild' and you do need to see a Dr. asap to discuss this and find out what is happening to you, it sounds terrifying.
I suffer from obstructive sleep apnea and wear a cpap but have never experienced the issues you are having.
Medhelp does have a Respiratory Disorder Expert forum and there is a Dr. on there that perhaps can give you some suggestions, just click on this link below...good luck to you:)
http://www.medhelp.org/forums/Respiratory-Disorders/show/128