Hi Kristy, Dizzy's right, just enjoy that memory and get right back on track. Don't beat yourself up about it because at this point what's done is done. You are perfectly entitled to be human and get sidetracked sometimes. The most important part of this is to get back to business.
I am sure that you did not gain over 6 pounds in one weekend. It's got to be water weight from all the sugar and salt you consumed. Try not to weigh yourself more than once a week because your weight fluctuates from day to day. I find this very hard... I keep getting tempted to get on that scale and see how I'm doing but I know it's not the only way to measure progress.
Good luck this week and check back in to let us know how you're doing. Believe me, we have all been there and done that. It's ok to falter because in the long run, this will only be a blip in your progress!