Thanks for using Healthcaremagic,
After going through all available details, you have hematuria
detected via dipstick.
You have been investigated and found nothing like kidney stone or urinary infection. This is good that at least it tells us nothing very serious is there.
You have frequency and soreness while urinating so there has to be something which is missed. You should visit a Urosurgeon to examine and find out if there is overactive urinary bladder
is there, Urinary incontinence
is there which makes you uncomfortable.
Other differential would be PID pelvic inflammatory disease
which can be examined by Gynecologist and easily treated.
This could also be result of Mirena
coil inside which she can examine and if necessary a trial of coil free period can be tried.
Hope this information is useful to you.
wish you good health.
Dr.Akhilesh Dubey M.D