No Fetal Movement!😳

Katie
I'm 39 weeks and had an appointment today with my OB. Everything was good except my blood pressure was a little high according to the nurse. A few hours after I stopped feeling baby move as much. I could feel a shuffle now and then but now I havnt felt him move at all for a couple hours and I'm getting really nervous. I know baby slows down in movements closer to the due date but he has always been a VERY active baby. 
I drank two large cups of cold orange juice and have been laying down on my side like they say to do but nothing. Should I go to the hospital??? Should I wait until morning and call my dr office??  I don't want To be overreacting and it end up being nothing but I won't forgive myself if there is something really wrong and I ignored it.