Women often wonder what is the Unnecessary reason for bleeding. There are many, and some of them are quite silly. If you have bleeding while you are pregnant, such as spotting or period blood, make sure you see your doctor and he will be able to tell you the causes. Sometimes the bleeding comes from something that you are not expecting, like a cyst or cancer. In those cases, it is more important to treat the problem than to worry about why you are bleeding.
Other causes of bleeding are not so much unnecessary as they are preventable. For example, heavy bleeding after sex is not really necessary because you do not pass it on. But if you use a condom, you can reduce your risk of contracting an STD by using one. Also, drinking too much alcohol can cause you to bleed. So try to limit your alcohol consumption to one or two drinks a day and you should be fine.
The causes of bleeding outside of the uterus are less serious and can be easily addressed. For example, if you are on birth control pills, you may experience spotting or bleeding. The spotting can come on and then go off at random. So you can take Birth Control Pills as a preventative measure and not worry about why you are bleeding.