Hi Camelot and Welcome to the Forum!
(I must digress a bit. I live near LA and my condo complex is called Camelot. It was the site of a zoo call "Jungle Land" where all the Hollywood animals use to be kept. I hear my complex is called Camelot because it was the camel lot).
Obstructive Sleep Apnea (OSA) is about a lot more than fatigue or being tired. The greatest effect OSA has on our bodies is that it trashes our cardiovascular system. Aside for getting your OSA treated, did your doctor recommend you see a cardiologist? Maybe your doctor is thinking you are out of breath simply because you have a few extra pounds (you will see below that untreated OSA causes weight gain). Since it is impossible to know what he was thinking, you ought to give him a call and leave a message asking why he thinks you are out of breath. Is it because he thinks your weight is causing it or does he have concerns that your cardiovascular system is not in the best shape? It sounds like you have an excellent doctor to catch it like he did, but you still have to be a well educated and strong self-advocate if you have this disorder.
I have listed some effects of untreated OSA at the end and the link is to a literature review that I have here on the forum.
The Cardiovascular and Metabolic Effects of OSA
Keep posting your progress and keep asking questions!
The effects of untreated obstructive sleep apnea (OSA) are severe and systemic. Some of them are; increased blood pressure, increased risk of heart attack and stroke (from the constant cycling in and out of hypoxia and increased blood pressure), heart arrhythmias, nocturia (because the increased pressure in the right heart ventricle makes the body think there is too much blood volume so urine is produced), headaches (probably from the hypoxia), fatigue (duh), memory and concentration problems, weight gain (sleep deprivation causes weight gain for several physiological reasons, one being the alteration of the hormones leptin and ghrelin), apnea induced seizures, there is a link to diabetes, there is a link to GERD, night sweats, depression, anxiety (each apneic event is a true suffocation and elicits the "Fight or Flight" adrenalin response), Fibromyalgia-like symptoms, impotence, relationship and job issues, car accidents, etc.
Also, keep in mind that there is no stereotypical OSA patient. There are men and women, thin and thick, old and young (see our pediatric forum), fit and not so fit. And, in one study of 405 men and women OSA patients, 30% did not even snore.
Being defeated is often a temporary condition. Giving up is what makes it permanent.
Marilyn Vos Savant
That which does not kill you makes you stronger-Friedrich Nietzsche
Friedrich must of had apnea.