Early preg symptom!

Okay . This is weird. About a week ago my scalp starting itching like crazy and flaking so bad! I never get dandruff...I've been using head and shoulders and it's not helping at all...I literally sit in the should and scrub my head and rinse for 10 minutes to make sure I get it all out...has anyone had this as an early preg sign? My af is due 2/22... Any answers help! Maybe I'm just going crazy?