Talk to Psychiatry on Social Anxiety

AOA Dear doctor ! Sir I'm having social anxiety (fear of public speaking )since I was at school at that time somehow I manage this but as I grew old this is no longer a problem for me now I can't talk in few people's and I can't give a presentation Everytime when I come ahead my heart beat rises apparently for no reason my hand and legs start shaking . One can imagine how difficult it is . I'm good at studies but because of this I had left uni .my parent want to know why I had left uni ? But i have no reason I can't tell them that I'm having social anxiety And they can't understand because I'm from a backward area and my parent u know..... They were worried about my future and I'm also worried about my future . Seriously it's not that as people usually think so I need Help else I'm fear about doing something wrong ... Kindly sir help me my whole life is at risk .