I've been told that I breathe heavily while I'm sleeping, and it seems like my oxygen levels and pulse rate drop during those times. Specifically, my oxygen saturation goes from 99 to 91, and my pulse rate drops from 88 to 68. Eventually, they both go back to normal, which is 88 for my pulse and 99 for oxygen saturation. This pattern happens multiple times throughout the night. Could you help me understand what might be going on with these symptoms?

Probable diagnosis is obstructive sleep apnea syndrome, pulmonologist opinion is advised to the patient.