Sleep study scheduled

Hello, I have a sleep study scheduled in May and it can't get here soon enough. I sometimes wake up during the night gasping or I will wake up and my heart is beating so fast that it feels as if it is vibrating. My Dr. feel that my heart and blood pressure is compensating for a lack of oxygen, hence the sleep study. Did anyone else have this experience prior to being dxd with Sleep Apnea?

Yep I had many of things going on. When I went in for the test I thought naw I dont have it. Well about 1am they came in and put the machine on me. I am still trying to get use to it. But I know that I need it. Good Luck