Doctor's Answers (1)
The recommended frequency of STD testing will vary for different individuals. If you have had your testing performed 6 months ago, and have not had ANY sexual partners since, then I would say it is not really necessary to test unless you have any symptoms of concern.
However, if you have had sexual intercourse with a known partner but no NEW sexual partners as you mentioned, then your decision to test would depend on whether you have concerns about your partner's status.
If you are concerned that your partner has had other potential exposures, then yes it would be recommended to get a screening test, as the nature of STDs will always mean there is a potential chain of transmission.
For females, it is also important to schedule regular pap smears (at least every 3 years) as well as discuss with your doctor on the need for HPV testing or vaccinations if those have not been completed.