No movement no heartbeat help please

I had a spoonful of unpasteurized cheese and had whole milk pasteurized but was spoiled and I got diarrhea. I have been stressed and I have not felt any movement in four days! I always feel the baby kick anytime I lay on my right side! I used a old heart beat listener from the 90s it could be broken who knows but no heartbeat! I haven't felt movement I am scared I don't know what to do I'm 27 _ 30 weeks pregnant I am scared I want to go to the emergency room but is this a emergency what do I say? I'm scared please pray my baby is alive. What should I tell my doctor