My 15 month old is becoming increasingly incapable of being left for longer than 5 or 10 minutes. If I try to wash up or make meals she clings onto my legs, if I go upstairs (for longer than 5-10 mins) she stands at the bottom of the stairs screaming. The only way I can get anything done is if I stick her in front of CBeebies or Peppa Pig
She plays beautifully with toys and looks at books independently if I'm sat in the vicinity but if I try to leave the room it's only a matter of time before the screaming starts...
She's can even be funny with DH if I'm there. If I'm not she's absolutely fine.
Is this normal or are we doing something very wrong?