Nick Young Says 'I'm Going Through Something In Life'

He's smiling in public -- but there may be a lot more going on with Nick Young behind the scenes than meets the eye.

Swaggy P was leaving Penthouse in L.A. this weekend -- when we asked about the recent picture of him furniture shopping in his pajamas in the middle of the day.

"I'm going through something in life right now," Young explained.

The NBA star does have a lot going on right now -- Iggy dumped him, his ex is pregnant with his child, and there are rumors the Lakers are looking to ship him out of town.

If pajamas in the daytime make you feel better -- have at it.