If suffering accidental withdrawal symptoms from Lexapro, how long will it take for them to go away once I start my dose again?

At college and went home for a few days, accidentally leaving my meds at school. I’m on 10mg of Lexapro and it’s probably been about 4-5 days since I last took them. Did last night and simply did not sleep at all. Have splitting headaches and other similar side effects. If going back on my dose, how long should it take for the withdrawal symptoms to disappear? Interfering with daily life and classes.