Ia It Normal To Have Itching And Swelling In The Stitches After An Operation?

hi doc?

i had my laparoscope op tuesday and was discharged at hospital wednesday.

my stitches are itchy and sometimes get bit swollen why is it so?

is it normal?

i was using mecurocome on it must i stop or ?

a friend advised that i must use salt water to calm it down and today i was doing sport is it bad?