Wellbutrin

I was on lexapro 5mg for 3 years. I felt as if it wasn’t working quite as well so I seen a new doctor and she put me on Wellbutrin. I started taking it last Saturday and the last 2 days have been terrible. Depression is the worst it’s ever been. I am not able to get an appointment until Thursday. Would it be an issue to just stop taking it? I’ve only been on it for 6 days so I shouldn’t have withdrawal symptoms right?

Edit: Due to negative side effects like sexual dysfunction and weight gain I requested a different medication.