where is my phone?? why is my watch not pinging it...

Apple Watch can't ping your iPhone if your iPhone or Apple Watch have Bluetooth off, are too far away from each other, your iPhone is out of battery or are not paired. Use Find My on a Mac, iPad, another iPhone, or https://www.icloud.com/find/.

See this;

https://www.lifewire.com/fix-apple-watch-not-pinging-iphone-5190832