Do I need to see ENT if making snoring sounds while awake? 2 sleep studies normal, 3rd showed signs for severe OSA, but I think it's obstruction.

Sleep/Pulm M.D. Some common risk factors for OSA include obesity and tonsillar enlargement. The study can include BiPaP to study the improvement of the OSA with this device.
R/O OSA. OSA can be suggested by history and physical. Excess snoring/daytime sleepiness/apneic episodes/ aM headaches. And the Exam obesity/small oral airway/collar size>18. The definitive test is a PSG with split night/CPAP titration. I would request copy of sleep study and get a second opinion if you are not satisfied with the options. You are young CPAP can be difficult to tolerate. ENT FOR UPP EVAL.