My iwatch wont pair with my iPhone now

See if this helps.....https://support.apple.com/en-us/HT205025

Did you upgrade your Apple Watch to watchOS 6, or did you just buy a new Apple Watch Series 3 or 5 AND do you have an iPhone 6 or older?

iPhone 6 and older iPhones will not work with watchOS 6, and these iPhones cannot be upgraded to iOS 13.

If this is NOT the problem, I apologize for any confusions I may have caused.