I'm so embarrassed!

My boyfriend and I live together and the other day I was having a dream I went to the bathroom and I wet the bed! I'm 19 years old and have never had a problem with this. But it just happend again.... as soon as I feel it I wake up and it's only when I dream I'm doing it. Could this be a pregnancy symptom? And if not maybe a stress problem... that's about all I can think of and I j ust want to make sure I can stop this. I hate feeling like I'm 5...