What's the point of confining them or retraining them of where to lay when they are not laying at all?
The exam, good to know, but I have two hens and neither is laying, so the exam will tell me nothing.
There are several possibilities of why you are not getting eggs. I'll go through a list.
The most common reason for hens to stop laying is the molt. That may be a full molt or minimolt that can be caused by stress. Doesn't sound like it is your problem.
They are hiding a nest on you.
Something is getting the eggs. Most critters that eat eggs leave evidence like shells or wet spots. The typical critters in the US that don't leave evidence are snakes, canines, or humans. Snakes tend to take eggs, disappear for a few days until they digest them, then come back for more. Since t is every day a snake is unlikely. Most canines like a fox or coyote would probably be more interested in the chickens than the eggs but a dog can eat eggs and leave hens alone. Does a dog have access? A human doesn't necessarily mean a thief, some people play practical jokes. That's happened a few times on here.
Some diseases will stop them laying. Or their internal egg making factory becomes defective.
Light is very important to them laying. Not so much length of day but changes in the length of of day or night. Adding or removing a security light might affect them. Doesn't need to be on your property. This can trigger a molt that may take three or four months for them to get over.
Stress like them running out of water for a time period, changes to housing, changes to the pecking order, extreme heat or cold, a predator attack or scare, many different kinds of stress can cause them to stop laying. But usually these things are fairly temporary, they get over them in a couple of weeks.
A broody hen doesn't lay eggs. Not likely your problem.
Why would you need to know if they are laying or not? So you can ask the right question and eliminate some things. If they are laying and you are not getting eggs the answer is different from if they are not laying at all. From across the internet we don't know enough about your situation to be able to guess exactly what is the cause. All we can do it to try to give you information so you can help yourself. And you only have two hens, it could easily be two totally different reasons.