After recently updating my Apple Watch, I can no longer access the Control Center. Anyone else gave this problem?

Not experiencing the problem, but I have seen a couple of posts about this. Try rebooting the Watch. Press and hold the Digital Crown and the power button together until you see the Apple logo and then release. The Watch will reboot.

Thank you. I rebooted my watch and now have access to Control Center and Notifications again.

Yes! I have the same problem! I have tried so many things & thought maybe something was broken. I just rebooted & now I can access it again.