I need to know everything about the first doctor's visit please!

Kortney
I'm 18 and this is my first baby. I don't know what to expect when I go for my first appointment which is March 7th. Ill be about 9 weeks at that point. 
•Will they do a vaginal ultrasound? If so, what does it feel like? 
•What will I need to know and what will I be asked? 
•What all do they check on?