My husband also has severe sleep apnoea (and didn't fit into most of the at risk groups), but its basically where they stop breathing in their sleep and then half wake up gasping etc (but they don't really wake up etc).

Once he was assessed (you can go public but i believe there are long waiting list, we only had to pay a $70 excess on our PHI), we got him a special mouth guard device to hold his lower jaw forward. This helped a lot, but not 100%, so we will probably get the CPAP soonish.

But there are bad things (long term), that can happen from not treating sleep apnoea, so it is good to have it treated.. the most important is that now DH actually gets an almost refreshing nights sleep, before he was crashing out on the couch at 7pm 'cos his sleep was such bad quality.

You can snore without sleep apnoea, and if its only happened with pregnancy, i wouldn't be so worried it was that, but you can also have sleep apnoea without snoring, so you might not know it.

You can get a neck pillow also to help with snoring (DH has one, it does help), if looks like one of those velro on travel pillows, but you wear it around the front. You can also get these strips of tape that you put on your nose (they did nothing for DH, but his nose wasn't so much his problem, it was his jaw collapsing back and stopping his airway supply)