sleep problem

Sometimes I wonder if I have some sort of sleep issue instead of depression, or if the depression is the result.. Saturday night I slept terribly. And this morning I woke up feeling like I couldn't breath because I'd spent the night on one side, at least it feels that way. My dreams are always wild and vivid and I normally wake up tired. I usually wake up a number of times a night, Saturday I woke up seven or eight times, last night a more  normal twice. I've been tested twice in sleep labs, no particular apnea or other issues were found. Feeling very nauseous this morning. Wanting to throw up and at a few points felt like I might. Ate some yogurt and a banana, which hopefully will help calm my stomach. Friday and Saturday were actually good days, not exhausted, got some things done. Hope to have more of those and less of today.