Maybe it's just gas, has your bed or meal time changed? How about diet? I nearly always wake 2 hours after going to bed, I get up and go to the bathroom (whether I need to or not), then go back to bed. Usually I sleep through then, but if I have eaten a lot, too fast, bad food with lots of sugar, i tend to wake with every gurgle, which tends to be every 1.5 to 2 hours for me.
Sleep position can help. I get less problems lying on my left side, lying on my right side prompts stuff to 'move' and then lying on my stomach allows me to pass gas.. I sometimes use the right side and Stomach lying to 'de wind' myself before lying on my left side and going to sleep.. I still Always wake up after the first 2 hours but that's probally my late eating hour.