First, the most important advice that I have is no NEVER be embarrassed to seek medical treatment-- it could save yur life. A doctor does not judge you or believe that any of your symptoms are weird or funny.
Are you prone to hard bowel movements? Does your anus burn as well as itvch.
You may have an anal fissiure. It is best to make an appointment with a colorectal specialist for an accurate diagnosis.
Here is some info, let me know if you have questions:
http://www.mayoclinic.com/health/anal-fissures/AN00671
http://www.mayoclinic.com/health/anal-itching/DS00453/DSECTION=3
http://www.mayoclinic.com/health/anal-itching/DS00453/DSECTION=3
http://www.mayoclinic.com/health/rectal-bleeding/DG00015
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