Should I go to L&D?

For the past two days (not including today), I've noticed a decrease in fetal movement.. Yesterday, I called one of the nurses and she set an appt for an NST. During it, baby was very active and everything looked normal... But when I got home up until right now, movements have slowed down again. I'm not sure what's going on but I had BH contractions after the appt and being a FTM, I didn't know whether it was the real thing or not so I called the nurse once again and she said the doctor said because I'm so far along (39w), to just head to L&D if I have contractions, bloody show, leakage or decrease in fetal movement again. Something just doesn't feel right to me but I don't wanna go there just to be sent home... What should I do??