Hi.my Name Is Sadia Hassan.dr Sahiba Last Year Im Pregnant

hi.my name is sadia hassan.dr sahiba last year im pregnant bt in 8th months of pregnancy labur was start i was diliverd baby girl bt she had died 3rd day after birth due to immaturity of lungs. now im pregnant nd my question is that how can i prevent my pragnency that i smoothly completed my 9th months nd i diliverd a healthy baby.