So it's about 3 in the morning and I wake up to use the bathroom (typical for me being 32w pregnant) and my SO sits up and says he has to go too. Well he never went upstairs and I asked what he was doing and he said he wet the bed. He's 23 and this has NEVER been an issue before. What could cause this?? He did it while he was asleep. Didn't drink water during the night, stopped drinking anything around 8pm and had no alcohol last night at all. I told him if it happens again he needs to see his doctor but he thinks it's no big deal! HELP!