When will I start to gain weight?

i am a recovering anorexic.. and I want to know like when ill notice a difference in my body! I upped my calories from 1700 to 2300 and an increase in my fat and protein! I have a personal trainer so I won't get like too fat! I do want to go up in my bra size, so my trainer told me that will be like 5-10 pounds! does anyone know one ill start to notice a difference?
When will I start to gain weight?
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