Yes it can be weight related or genetic- my dad has it and so do I- I'm hopefully it'll go away with weight loss.
I know when I had sleep apnea I was tired throughout the day and just wanted to go to bed when I got home.
I think if you have developed snoring then you may have it.
You don't need to be watched. When I was diagnosed I went to see my primary with my husband- we spoke to her about it and filled out information. Then a company came over to my house with a kit, showed me how to hook it up, then I put it on and went to sleep with the recorder on. When I got up I put the kit all back together then they came and picked it up. A few days later they confirmed I had mild sleep apnea. I went to this place, got fitted for a mask and was given a machine calibrated to the settings I needed. Since then life has been so much better for me- I wake up ready to face the world. I come home and am not as tired, and so on.
Sleep apnea is VERY bad for your heart and blood pressure- you can DIE from complications due to sleep apnea- so please get checked out.
Here is my cpap machine:
http://www.thecpapshop.com/cpap-machines/3303_h3i.html
if you scroll down you can see it takes either mask. I use the nose mask, not the full face one because mine is very mild.
I would stop breathing 12 times per hour for 10 seconds at a time, and no I wouldn't wake up- all my body would do is go out of REM sleep so it'd stop then go back into REM sleep but because I was messing with my cycle I wasn't getting proper sleep.