When should I be worried about decreased movement?UPDATE

I'm 33 weeks and have been having decreased movement for the past 2 days or so. I havent felt her for about 7 hours now and I'm getting more and more worried. I'm lying on my left side, I've drank cold water, caffeine, ate some food, poked at her and nothing. I texted my doctor about an hour ago but they haven't responded...

UPDATE: currently at the doctors now. I felt two strong movements around 5am but she still doesn't seem to be moving like she normally does. Let's hope everything is okay!