I hate exercise, it makes me feel bad?

Don't exercise too much, start slow. If you're having a lot of problems after light exercise you should talk to a doctor. Walk a mile several times the first week and then increase in pace and distance until you can run for awhile. Maybe by the third week you could be walking 2 miles several times a week. Bring some music, a dog or a friend with the same motives and fitness level. Don't worry about people watching you. They probably won't care at all. If you like dancing try doing some slow to moderate paced dancing 15 minutes a day and then increase in speed and length from there. Get lots of vegetables and a well balanced diet because that is 80% of weight loss and it will make you feel better if you don't already do that. Just try and take it slow and don;t worry about people watching. Starting is the hardest part and you may eventually get kind of hooked if you continue to really stick to it. You could also find some friends that would want to go swimming with you. Jump off the diving board, or play games. You will likely feel good and tired if you let yourself go whatever age you are and have a good time and try and forget about people watching even though they're probably not.