first prenatal appointment tomorrow!

I am so excited/ nervous for my first doctor appointment tomorrow afternoon. This is my first pregnancy and I am going to a new doctor so I'm not sure what to expect. Glow says I am 6 weeks today, but I have irregular cycles so I am not sure how accurate that is. I just can't wait to see if everything is going ok and see hiw far along I am. Any advice for the first appointment? Trying to stay calm and positive!!