First Trimester Help!

Just got my positive pregnancy test! I'll be 5 weeks tomorrow according to the first day of my last period calculations. Any tips for keeping calm in the beginning? I am so excited and nervous. I want to tell everyone and no one at all. I got to my OBGYN next Wednesday for a pap and cultures. Will they do a blood test? They said my first ultrasound won't be until the end of May and that just seems so far away! I just want a healthy/sticky baby! This is my first pregnancy. I am such a planner and just want to start researching everything! I might go crazy over the next couple weeks. It is just so exciting!