How to calm pre student clinic anxiety?

I am currently in school and have completed 3 student clinics already, yet I am so awkward, shy and nervous giving massage to the public, especially men. Each clinic has been fine, great actually, yet each time I feel sick to my stomach before the treatment and my hands & voice are shake when beginning the massage, how can I help this? School encourages grounding and meditative calm states, but it doesn’t seem to help me much. I’m so close to getting on anti anxiety meds, but this is truly my last resort.