From a biological point of view, fertility is generally affected by varied factors such as genetics, hormones as well as lifestyle.
Plausibly, you have been thinking of having a baby in future and probably want to know if you are fertile.
Well, apart from visiting a hospital to confirm your fertility status, there are other proven ways that can be employed at home as quoted on health.howstuffworks.com
Usually, fertility is determined by the presence of Follicle-Stimulating Hormone (FSH), Luteinizing Hormone (LH), and Estradiol, the primary form of Estrogen which plays a role in controlling ovulation or rather reproduction cycles.
In our case, we will use an urine-based test kit, ovulation predictor kits that function as pregnancy test kits.
Here are the principles
Firstly, gather some urine in a bowl (preferably morning urine).
Then insert the testing stick into the sample and place on a flat surface to interpret the result.
This usually takes a couple of minutes depending on the test.
Something important to note, there are several factors that can influence your test results. For instance, prior to the test, avoid taking water as it is reported that excess water can dilute the LH level present in the urine hence giving a false result.
You will be required to pair your test result with a certain chart. This chart will help you interpret the result accordingly.
All the explanations on how to interpret the results are provided in the kit box.