Apple watch Series 3 Not Waking on wrist rotate and not Measuring heart rate

Hi

I have a series 3 apple watch on latest OS and a few days ago, I noticed my screen was not waking up when i raise my wrist, but it wakes up when i touch the screen....also it not measuring my heart rate.

I reset the watch twice, checked the setting multiple times, but nothing looks to work.

Please advice.