Hi Dr Am Very Upset Becuse Of My Belly Fat

Hi dr am very upset becuse of my belly fat my 1st child is 2 and half year old nd after my child my belly was hanging.like rubber now agan am 8 months pregnant nd my lower belly is still like rubber only i want it to no how can i tighten my belly or how can i get my shape bake plzz help me i realy need help