Looking for advice on where to start

Hey ladies ! I found out yesterday I'm around 4 weeks pregnant . I can't get a doctors appointment until June 6th and I have no idea what to do in the time being ? What do I eat ? What do I cut out ? What supplements do I take ? I'm petrified at doing things wrong and I feel a little like I got taken from my world and put into an entirely different one . And I'm a little overwhelmed with the thought of having 9 months to learn EVERYTHING.