Unsure of everything

Hey ladies! I just got my BFP, and my doc won't see me until August 14, not even for a blood confirmation and to ask questions.

I'm so unsure of everything I do, because I'm only 3w4d and am so scared of a MC.

This is my first, so I dont really know the do/ do nots of pregnancy and I need help.

I already take prenatal vitamins (have been for about two months now)

I know no deli meet, or fish that could contain mercury.

I know spotting is okay, as long as its not a lot.

And caffiene should be limited.

I'd really appreciate anything!

Also- I've been cramping like I'm about to start my period. Is this normal?