Dry mouth?? Greasy hair? Anyone else??

So AF is 2 days late, I know it's only 2 days so I'm waiting till a week at least before I test, but the last week my mouth, skin and scalp have been soooo dry!! I will drink 2 glasses of water and literally a minute later my mouth is so dry and im thirsty again! So I obviously pee more often. It's constant! Worsens at night so have to sleep with a lot of water nearby. Also my skin and scalp have been so dry and itchy!! I never get dandruff so this irritates me a lot and strangely my hair is so greasy oily and YUCK!! I have naturally soft straight hair that needs to be washed every day or it goes yuck, but lately after I shower, I let my hair air dry like usual and it goes all oily and yuck as soon as it drys!!!! Never happened before and it is really annoying me :( my hair just looks disgusting and I normally have really nice hair even my friends have noticed how horrible it looks. also greasy skin and break out on my chin, something I never get not even when AF comes. Anyone else had any of these things while pregnant?