How can I lose 20 to 35 pounds by June?

I weigh 107 pounds (NOT a typo at all) am 19 years old, and I am 5 feet tall. Before I graduated from high school, people would always call me a fatty, a fat woman, an obese girl and also said things like 'go away now fatty, go away now fat woman, you look like a fat 60 year woman, go away right now' and these people still send me messages like this on Facebook. My are huge people say, and they tell me to shrink them by like 50%. I cut soda out of my diet completely, drink 1 to 2 cups of tea a day, and I eat healthy. Also I exercise for about 45 minutes a day. can someone please tell me how to lose the weight so that these people would just leave me ALONE? It makes me feel awful and not confident, happy or proud of my life at all that people are sending messages to me saying things like this.