Cheat day already

I went to starved rock yesterday and booked my wedding. It will be in about 13 months!
Then I ate a huge cheeseburger, sweet potato waffle fries, and a bunch of other crap.
With weigh in day being Friday I guess its better to cheat Saturday than Wednesday but I still feel guilty.
My engagement party is in a month and 3 days and I won't be at my goal weight by then.
I will be closer, definitely somewhere in the 130s, but not 130.
I was sort of wanting to slow down in case I really do drop 15 after I stop nursing.
If I lost 15 now I would be 125. Which I guess isn't too bad but 115 is, in my opinion, for my height. So I'd like to avoid that!