Don't know what to do!!! Need advice

Sarah • Single mom of 4 beautiful babies. All my babies have autism and seizures. Love them so very much
So I am 39 weeks pregnant and I have not felt my baby move Or hiccup all since yesterday morning. Is it normal? Should I call my OB? He is normally very active I have not had one day he was not moving. I have tried drinking cold water and laying on my side with no luck.