I'm 36 Weeks Pregnant And Have Smoked Weed Once Or

I'm 36 weeks pregnant and have smoked weed once or twice a week and scared for Dr's to test me and my baby when i go into labor and get in trouble for smoking. I didn't smoke to get high out of my mind I smoked because it would relax me and help my back pain, never intentionally did it to hurt my baby, I've heard from multiple mom's that have smoked while pregnant and babies are just fine. I love my kids very much. Please give me answers...? I live in abq nm