Always had irregular periods. but my period lasted 8 days & continuing when i usually last 5 days. it's lighter than usual. had sex 1 week ago. help?

Irregular periods: You will need to see your doctor to determine what is the underlying cause for the irregular periods. An physical examination and tests are in order to determine a cause. Have your partner use condoms if you are sexually active. Once you have been examined and appear healthy maybe a trial of birth control pill can help you have a more regular and predictable period if no contraindication.