What std test to take if you had only vaginal sex with a girl for first time of unknown status? doctor please help. its been a month n half.

To begin with...: ....Don't have unprotected sex with a girl of "unknown status." you need to use protection. Stds that you can easily be tested for include syphilis, gonorrhea, chlamydia, and hiv. There are other stds too, but harder to test for in person without symptoms. Unprotected sex also frequently causes pregnancy. Use protection. A moment of passion is not worth a lifetime of regret.