Trying to lose a few pounds so I can fit into this dress for a concert I wanna go to that I don't have tix for yet

so I'm gonna try to list everything I eat every day so I can be more truthful to myself.
Today I had:
Breakfast:huitlacoche quesadilla and some eggs (normally I would have added a taco or two to this) and three tortilla chips.
Lunch: one grilled fish taco, and one grilled shrimp taco, did not eat the tortilla, but did have crema and salsa on it.
For dinner I'm gonna try to just have some boiled eggs and quinoa salad, but I'll let you all know in the morning what really happened.
Plus I do have two drinks every night. That may be why I am gaining.