invader
I'm a girl.
I came home one day, and I saw my betta, Moe, all swelled up and not moving much. He's gotten better over the past couple of days, but what could that be?
Are his scales lifted up, so that he's got a rather pine cone-ish effect, when seen from above?
Even without the raised scales, it still sounds like Dropsy, to me, which is essentially kidney failure.
But before you panic, is there any chance of a picture?
Also, your water stats would be a good thing to include in a post like this, as it'll allow knowledgeable people the sort of information they require to help you diagonse the situation. What volume of water is he in? What's the ambient temperature of it? How often do you water change? What are the ammonia/nitrite/nitrate readings? What do you generally feed him? How old is he?
Could be constipation try some shelled peas, do you feed alot of dry foods to the betta.