Hey girls I jus found out I'm pregnant! Question?

Brenda
I'm a 1st time mom to be yay! I am 4weeks 6 days and 35 more weeks to go lol 
My question is around how many weeks or months am I sopose to make a doctors appointment? and do I go with my regular Dr. First or straight to a OBGYN? And I heard u can start taking prenatal vitamins? already or just wait till Drs. Tell me to?
Thanks😘