Hello, I am from America and I came to Pakistan for a month, (still here). I didn't receive any vaccinations so I refrained from doing stupid things. One day without thinking I drank some tap water. Some other things I had a lot of include watermelon and mangos. Three days ago my throat started hurting and I was extremely fatigued. I thought nothing of it but it got worse. Now, whenever I swallow, my ENTIRE neck goes through extreme pain. What happened and how do I get better?