Wake up feeling sick and with a vile taste in my mouth

[cupcakesmakeyouhappy]

Firstly I blamed a medication I was on. Not on it anymore.
Then I thought it was wine (the night before) but even when I haven't had wine, I wake up like it. Also I don't sleep well.
Anyone had this? Its horrible and I feel it's never going to go :(

I have this if I’ve had too much sugar and haven’t drunk enough. It usually passes though.

It does pass but the morning is just awful. I will try more water and less sugar maybe. Thankyou :)