Hey, strength! You sound just like me on my first day. (Only I was way to sick to eat or take a walk) I stayed on this site almost all day. I posted some, but mostly I read other posts because my hands were shaking so much I could barely type.
like Abraham and others have said, post as often as you need. This group is supportive and here to help.
I'm just on day 9, so just a few days ago I was where you are...it is scary, and it sucks, but once you fight through things get better.