You can feel period blood coming out, especially when your flow is heavy. You might notice it when you wear a pad or liner. However, the feeling is usually just a slight sensation and not painful.
It's important to note that the amount of blood lost during a period is typically small, about 2-5 teaspoons. Most of the time, you might only feel a drip or a light flow.
If you're concerned about your period flow or experience any unusual sensations, talk to your doctor.