Is it possible the red lobster from last night made me gain weight?

The scale says I'm 2 pounds heavier than yesterday and I thought I would lose weight cause my red lobster meal was around 70% caesar salad, 20% mushrooms and snails and shrimp, 10% coconut shrimp and waltz favourite shrimp. The reason I had so much salad is that I am afraid having only salty food without vegetables would put my health at risk and my parents don't like salad that much so I was the main person who ate it. We have left overs for another 2-4 meals so will be eating red lobster again tonight.

Is it possible the red lobster from last night made me gain weight?
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