Hello, thanks for using HCM.
Having unprotected sexual intercourse is a means of having STDs but not all unprotected intercourse
can lead to transmission of stds. A red and itchy vulva ( clitoris
included), fowl smell especially after intercourse are all symptoms attributed to Vulvo-vaginal infections. Vaginal infections could be or not be cause by STDs. A red and itchy vulva is primarily caused by Candida infections but such infections are not believed to be sexually transmitted. Trichomoniasis
is an STD and is a common cause of fowl smell especially during or after sexual intercourse and is associated with redness
and itching of the vulva.
In your case, assuming symptoms developed two weeks later after sexual intercourse which falls within the incubation period
of 5 - 28 days for Trichomoniasis, there is a chance that you probably picked up the infection after your intercourse.
However, the above are merely hypotheses and only an indept evaluation and appropriate tests could be more realistic.