31 weeks 2 days contractions

Ti
Went in for regular check up and nst baby heartbeat fine although I had to be stimulate to get baby going he is head down I have a irritable uterus they started me on meds every six hours call nefdipine said if I have 4 contractions go to er so nervous and scared not due till 6/22 csection 6/15 sorry had to tell someone