I have placentcia previa, i do have cramps, no blood. get weekly shots for pre mature birth. at how many weeks does the dr schedule a c sec?

Depends: Ideally you would want to wait until 39 weeks but there are legitimate reasons for doing it earlier.

36-37 weeks.: Cesarean delivery by 36-37 weeks is scheduled for cases of placenta previa without suspicion for accreta (34-35 weeks if accreta is suspected). Delivery should only occur in a large tertiary hospital with a blood bank that can handle acute hemorrhage. Avoid intercourse, car rides, travel, nsaids/ssris, exercise and heavy lifting and best of luck!

36-37 weeks.: If no accreta is suspected, 36-37 weeks; if accreta is prenatally suspected then 34-35 weeks.