10 month old super fussy all of a sudden

BlissfullySweet β€’ Married to my awesome husband πŸ’‘πŸ‘« Mommy to my precious baby boy πŸ’™πŸ˜˜πŸ‘ΆπŸ» and sweet baby girl πŸ’•πŸ˜˜πŸ‘ΆπŸ»πŸŽ€.
My son is driving me nuts. Hell be turning ten months this week and since last week, he has become sooo whiny and fussy. I don't understand it, he was never like this. He's also extremely clingy. Doesn't play with his toys much and if I go to the kitchen he crawls over and stands at my legs crying. It's driving me insane. He'll also just cry out of no where...doesn't make any sense. Anyone else dealing with something similar out of nowhere?Β 
**UPDATE**
These responses are comforting. I'm hoping this is a phase that eventually goes away.Β