You have to find out what prevented you from waking up during sex. You have some sort of parasomnia? What's the name of it?
What kept me from waking was my pure EXHAUSTION from the perpetual, cumulative sleep deficit that results from having delayed sleep phase syndrome and needing to keep up with daytime obligations--plus my physical health being stressed to the maxxxxx with a physical at-home mom workload that my petite, bad-back body was never cut out for (and which was worsening exponentially at the same time, eventually requiring a second surgery), plus the drain on sleep which occurs in conjunction with other unusual health problems that I have as well. [Here's a fun one: Look up erythromelalgia.]
Also: He used very deliberate, careful methods purposefully so as to N-O-T wake me...because he knew I didn't want it (and had told him no before falling asleep, because I was too tired, sick, or we'd been arguing, or whatever). He was using stealth measures to begin with, and my sleep-disordered situation aided his 'quest.'
As for the sleep study: I have seen a neurologist, who determined [and this I've known, by my own research, for years] that--withOUT doing a sleep lab test, because I have too many factors in the mix that could be affecting my sleep (including chronic pain)...so that it would be impossible to perform a 'true' sleep test--delayed sleep phase syndrome is what she feels I have. [Those symptoms have existed for me since long before any of these other conditions really came to the fore.]
I told her, "Thank you for saying that!! I've been saying that for years and years, and now I finally have some confirmation for it." The sleep paralysis is not the same thing as parasomnias. That runs rampant on my ex-husband's side of the family. On mine, it's insomnia, delayed sleep phase syndrome, restless leg syndrome, and sleep apnea.
(Sorry this took so long to get back to you. I got a phone call after you posted.)
Edit: A few minor edits have been added above.