WebMD is one site that can take symptoms and give you ideas on what might be wrong. Another word of advice though, most doctors do not like it when you do their job for them. If you go in to the doctor after doing your self diagnosis, let the doctor come up with their own prognosis, then you might suggest whatever else you found and let the doctor validate or this-prove them.
Also, some times self diagnosis can lead you to have symptoms that don't actually exist. Say you find out what could be wrong and there is a couple additional symptoms that could possibly be there. Your mind could make you start feeling those symptoms as well even though you really don't have them. That is fairly common.
Also, some times self diagnosis can lead you to have symptoms that don't actually exist. Say you find out what could be wrong and there is a couple additional symptoms that could possibly be there. Your mind could make you start feeling those symptoms as well even though you really don't have them. That is fairly common.