Hi Shawnee - And Welcome to the Beach!
I've been a member and doing SBD for 10 days now. Dragonmama has given you excellent advice! I find the support and inspiration on this site to be a major reason that I've stuck faithfully to P1 so far! ....When I find that I want to eat crap, I come to the boards, read some success stories, look at folks weight tickers going down and get a boost of will power. Most all us here are Veterans of the Battle of the Bulge...I tried Atkins, WW, LAWL, etc etc, I've been up and down, and all around ! I too have a low metabolism: same thing, nothing appears in blood test to suggest a medical problem, so I guess it's the way some of us are made.
JUMP in, the water is fine!