Most people roll on to their backs while they sleep and do not realize it. In fact they are in denial about it. They fall asleep and wake up on their sides. Many Sleep related problems occur primarily while you are on your back. Rely on your sleeping partners input.
There is a product that have advantages of different treatment options. The products listed are independent of this site and not to be used in place of your doctors orders. Some products on the various sites are available OTC for snoring and/or mild obstructive sleep apnea. There are some CPAP and dental that require a doctors prescription.