Can not washing off after getting out of the pool cause irritation around vag open? it's irritated without itch, burn, or discharge. will it go away?

Irritation: Perhaps the bathing suit material and tightness coupled with chlorine caused vaginal irritation. It doesn't appear to be a vaginal infection. The irritation should eventually subside, but you could try applying a mild over the counter cortisone cream or some soothing ointment to expedite the healing process. Also avoid wearing very tight jeans.