Much like you probably won't catch a cold every time someone sneezes on you, you also most likely won't get an eye infection every time you neglect contact lens hygiene. We all did it at some point, I'm sure.
However... just because you can't see the wildlife on your contacts and hands, doesn't mean it's not there. It is. Little buggers like this one https:/...
There are a few ways to check that, allaboutvision.com has some great information on various ways to check the orientation of a contact lens:
Method 1: The Side View
If your contact forms a perfect cup-shape with the edge perfectly
upright, the lens is correctly oriented and is ready to be placed on
your eye. If the edge has a noticeable outward ...