27 weeks preg. laying in bed under blankets. went to move blankets with my foot/leg. stomach started feeling sore. is this normal? could it hurt baby?

No: This sounds like ligament pain that you had. When you say stomach, though, could also be your gastrointestinal tract too. Bottom line, if you're having cyclic pain or painful cramping, then you should go to l;d to be evaluated. Constant throbbing pain is oven musculoskeletal and a warm bath or shower and relaxation can often help. Good luck!