[DrBdan]

Why does your buddy think you have sleep apnea? Do you snore? Do you feel like you walk up a lot during the night? If you really think you have sleep apnea you should go to a sleep clinic and have an evaluation.

Of course on the other hand it might not be that serious. Do you train a lot? It could be that a busy training schedule mixed with the added stress of a new job is affecting your recovery. Also, high stress will sap your energy and often make it hard to sleep so you feel even more tired. It's really hard to say unless you give more details than "I'm tired and yawn a lot"