OK, exactly as title says. Fall asleep no problem then wake up myself, DH and the neighbours by snorting really loudly 
I think it's cause my nose is blocked at night - I also seem to sleep with my mouth open and end up with really dry mouth and nightmares about being thirsty and not being able to get water.
I'm 37 weeks. I know this is a minor irritation and hopefully not long to go but I'm knackered. This happens several times a night. Anyone got any suggestions?