Scar Treatment On Forehead From Glass Scratch? (photo)

Hi sir i am rabi from uk.sir i have got scar on my face.It happened when i got stuck with the gate while parking my motorbike.I was wearing helmet at that time bt it wasn't proper.so, when i stuck on the gate,i got cut on my forehead with that helmet glass.After that i see the doctor he suggest me to stich the wound but i didn't do it .Now my wound is good but there is little bit bumps jst above my cuts and scars as well.I used mederma to remove it but the bumps haven't gone away. so help me sir.