Help please scared 😰😰😰

I am very early in pregnancy, I have my 1st dr. Appt Thursday ( apparently they’re very busy) I have no one to call or ask, I’m very nervous, last time I had sex was Saturday. I am scared but if it’s no big deal I don’t want to waste people’s time at the ER... should I go

Anyways?..... or is this no big deal/normal?