What Causes Pain In Lower Abdomen And Vagina After Losing Virginity?

Sir i m ambika..n my age is 20 years old.my problem starts with my 1st period.during the duration of period m sufring 4rm stomach pain.n last month i lost my virgenity..aftr dis new problem start.during period n normal day m suffring 4rm pain .d pain on the lower part of stomach and in vegina.n during toilet pain start more.n after toilet there is some relaxation..wt should i do?