I went to Mexico about 2 weeks ago and the last 4 days that I was there I became really sick. I would throw up all of my food and water, nothing seemed to be able to stay down. Afterwards I went to the doctor and a nurse said I had a throat infection. She gave me an injection on my butt to get rid of the nausea. It didn’t work. I still continued to throw up. I had a fever but i felt so cold. The 3rd day before I left I went to another doctor. He also injected me again for nausea. Didn’t work either. After I came back home I suddenly got better. Don’t know why or how but anyways long story short, my butt, where they both injected me on, has been numb ever since. For 2 weeks it’s been numb on my right butt cheek. Do you have any idea why?