Dear @limin,
Chlamydia is an infection caused by a bacteria that can be spread by unprotected sex. It is worthwhile getting a test from your doctor (usually swab or urine test) to see if you have been exposed. The infection can be asymptomatic, so you may not feel sick. Treatment/cure is usually pretty easy (oral antibiotics for a week).
It doesn’t have any relation to Hepatitis B at all.
Hope this helps,
Thomas