The old school simple way of checking to see if you have errors is by seeing if an edge loops goes all the way. If you see it stop, you know there is a problem.
If you’re suspicious that something is wrong with your mesh, there are various mesh analyzers on the Blender Market. They are very useful and point out any errors in your topology. Here’s a link for one of those:
https://blendermarket.com/products/meshanalyzer-pro
