Some puffiness just above the snake's vent (aka cloaca) usually means he's about to defecate soon- not necessarily that he's constipated.
Often handling the snake will "inspire" them to defecate (especially if you're wearing good clothes, preferably "dry clean" only) but also, a supervised "swim" in shallow lukewarm water (NOT deeper than the snake's body height- like 1-3" max) in your bathtub will also help "get results". If you feel a hard lump just above the cloaca- like a marble of any size- that might be a urate "stone" blocking the way, and that would be reason to see a vet- to help your snake defecate, but failing that, just be a little more patient for now. Doesn't sound like an "emergency" right now.
For future reference, before you handle a snake, it's a good idea to check for this "puffiness" to avoid awkward surprises.![]()