Skin around vaginal opening / hymen became whitish since hymen tore 4 months ago (fingering). rest of labia normal. Frequent watery clear odorless discharge. No itch/burn/tears/blood. Some pelvic discomfort. No intercourse, oral with 1 guy w/ no STDs?

Vaginal skin. In view of the whitish vagina with frequent watery discharge, the most prudent thing to do is to get checked for STD, yeast, trichomonas, bacterial vaginosus and also for HPV.
The negative evaluation for the above from your doctor, will give you certain reassurance.
Good luck.