Dry mouth at 6 weeks

My mouth gets really dry at work at more so at night. I work an a very busy environment and sometimes don’t even get a break, so making sure I’m drinking water while working in a hot kitchen is hard. At night I wake up to use the bathroom and I’ve noticed it even on nights I don’t work. Even my lips are dry.

I read that dry mouth is normal in pregnancy, but I’m never dehydrated; well before being pregnant and all I drink is water.

Is this normal or should I increase to even more water? Also should I tell my doctor at my next appointment?