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less than the size of 10mm are flushed out easily without major complications. It occurs in 2 stages - origin till the urinary bladder
and from the bladder to outside.
Pain, abdominal cramps, bloody urine and discomfort which are usual accompanying symptoms as the stones pass out is found only in the first stage. Second stage is asymptomatic and rarely one can experience flattened stream of urine or double stream urine.
From your description, your symptoms are unlikely related to renal stone passing. The discomfort in the vaginal region is probably due to localized infection. Consulting your local gynecologist will be helpful.
Drink plenty of fluids and cranberry juice can help in the meantime. Also important is to abstain from unprotected sexual intercourse until complete recovery.
Hope this helps.
Wish you good health.