Reduced fetal movement 26w6d

Hilary
Baby goes thru days here and there of reduced movement, and days where it's like she's trying to busy through my abdomin. Last two days she's been very quiet. Most times when I prod her she doesn't respond. When I eat or drink some fruit/juice, nothing. I have felt her tho, a slight weak movement randomly. 
Doc said previously to do kick counts at 28w. Should I start now? Just in case? I do have an anterior placenta, and she may be turned facing my back for all I know which would weaken the sensations. I don't want to go to the er if I can help it, any suggestions?