I just went through a sleep study and was diagnosed with sleep apnea, though I suspected I had it for a long time and I should have sought treatment earlier. It doesn't sound to me like what you are describing necessarily means sleep apnea, but it would be good to get it checked out. Most people I know with sleep apnea wake up many times during the night. They often aren't even aware that the reason they woke up is because they weren't breathing. I never had other sleep apnea symptoms like being exhausted during the day, but I always woke up every 90-120 minutes. When I was married my husband told me I would hold my breath in my sleep, then suddenly my body would sort of "convulse" and I would wake up. I never was aware of doing that.

Here is a link to a support message board that is very helpful and educational. Sleep Apnea Support Forum Index

Many people don't realize that if you have sleep apnea, your body is being denied oxygen while you sleep and it has serious affects over the long term.... heart problems, it slows your metabolism (some people lose weight without even trying, once they start getting their apnea treated), affects your memory. Good luck!