I think it's important like everyone has mentioned to learn from it, but hey, dont forget about the last 7 weeks. I bet those were some of the best 7 weeks you have had in a long time right? So dwell on how good those 7 weeks were, and use that as medicine for getting over this speed bump. You know you can do 7 weeks, so why not more? You learned something this time. I know the best thing you can do is stay positive, dont focus on things like feeling like a loser, because you are not. Just move forward and think about what you might want to change this time going about it. For me, when I have relapsed, it is because I didnt accept that I was powerless, and simply ask for help. That is a personnal thing for me, but I think it can work for lot's of people.
Anyway, good luck, congratulations on the 7 weeks and think about the good. If you dwell on the negatives, you might have a harder time moving forward with this.
All the best!