This is common problem now a days.Dont worry about it and dont get nervous.It is a skill and some skill can be learned.But before learning u have to throughout ur anxiety and stress and phobia. Consult psychologist immediately in ur area and go for treatment sessions, with the help of few sessions u can be able to do social conversation and uare able to increase ur sociability skills.

Seek help from a counseling psychologist. Someone who uses non directive methods would be of a good help!