What Causes Irritation While On Ritalin?

Hi.. I recently got diagnosed to ADHD and got prescribed Ritalin.... however, ritalin makes me sick to my stomach and it makes me extremly irritable and anti social. I have taken adderall and vyvanse in the past and I would like to get my prescription for either or back. Vyvanse especially, helped me soooo much.... I have an app with my doctor wednaday but I don t want to go in and say can you prescribe me adderall or vyvanse? ...