Snap Emma, i sTs too...whoop whoop for the sTs gals..lol no seriously its no biggy, theres always next week...just remember to focus on the positives. If you hadn't been on sf you probably wouldn't be out there getting lots of exercise in and having fun. So nothing to be disappointed about, your doing great!
Also when you start exercising your likely to see much better results after the first few weeks, so the pounds will start flying off eventually, lots to look forward to.
Have a great week
x