unusual vaginal itching

I was diagnosed with chlamydia over the summer and treated shortly thereafter. I have been having sex withthe same guy since then as well, we were both test multiples times and both are clean. I have recently been getting very itchy, red and irritated around my vaginal opening after sex.This lasts me for about 3-4 days after the intercourse happens, but does not hurt or anything during sex. This has never happened before, and scaring me that i might have another STI. i was thinking i might be allergic to latex, but this has just been a recent thing, so please help? I don't know what is happening, anny suggestions?

[Bhupinder Kaur, MD]

Hello,
Red itchy vagina can be due to a number of causes. First of all it can be due to allergic reaction or contact dermatitis to your undergarments, sanitary napkins or tampons, soaps etc.There is no change in the colour or smell of discharge in this case.

Secondly, It can be due to STD’s like Chlamydia or thrush(red,sore,itchy vagina along with pain during sex and slight increase in the vaginal discharge may be present), Gonorrhea(Itchy, red, or swollen vagina and Pain during intercourse, urinating or abdominal pain may be present),Trichomoniasis(red, very itchy vagina along with greenish, frothy discharge is present) or Lichen sclerosis which is a non-infectious inflammatory skin disorder which affects the vulval and perianal skin(Symptoms include itchy, sore and inflamed vulval skin which cracks, causing additional pain and stinging and treated with a strong steroid cream).All of them except lichen planus can be transmitted after oral or vaginal unprotected sex.

It is very difficult to pinpoint one diagnosis without clinical examination and cervix swabs or blood tests. So I feel that you should consult your gynecologist for a complete evaluation as treatment will depend on the diagnosis.
I hope it helps. Take care and regards.