Hi you may have Sleep Apnea, The reason why you are waking up maybe is you stop breathing, no problem go to your Doctor and ask him/her to send you on a Sleep Study that will tell you what you have been expriencing,, You may be given a
CPAP Machine (please look it up on the net
CPAP) there is a lot of INFO to help you and learn about Sleep Apnea ,, Hope i helped please Take care ..........