Just found out I’m pregnant!

I am 21yo first time mom. I’m really nervous. I found out yesterday and all the doctors offices are closed so I have to wait until Monday which makes me even more nervous. According to my period app I am 5 weeks. Is there any advice I can get especially just for over the weekend that I should know things I should and shouldn’t be doing or eating? Just until I can get an appointment scheduled <3 And just advice in general :)