Others find me extremely uptight and intimidating because i can not be myself around others..... how can i fix a mistaken identity?

Learn new behaviors: This has to happen. The meds may be helping but they're no substitute for learning new ways to talk with and interacts with people. Get with someone who will give you actual coaching in people skills. Understanding your past and your inner distress is important, but there are tricks to becoming likable. The Dale Carnegie books may even be a good start. Your insight tells me your future is bright.