My face becomes red when I talk to someone. Kindly help.

Hello doctor,

I am 21 years old and I have always been a shy person. When I was younger I used to sweat a lot because of it and I could barely speak with anyone. As I got older, I became more and more sociable, now I have got friends, I am getting along with everyone at work and I am feeling quite good about myself. I have never been depressed and I am a really happy person. The problem that I am facing is that whenever I talk to somebody, with anyone at all, my heart starts to rush and my face becomes red in just one second. I blush like I have done some dumb thing and it is intense and very very red, anyone can notice it. I have tried to manage it by going out as much as possible and I have learned that when I get comfortable with someone, the blush and red face thing disappears (but it took two years to get comfortable with my boss for example). I am aware the problem might be associated with anxiety, but I have never taken pills for it. I just want the blushing to go away, as that will make me less awkward and better in general. I have got a mitral valve prolapse and a ventricular hypertrophy.