This is called as intermenstrual bleeding or abnormal vaginal bleeding. Many times this resolves spontaneously and perhaps is due to minor hormonal aberrations or stress and anxiety-related problem (mediated through body hormones). But if the abnormal vaginal bleeding persists, the following causes should be considered;
1) Vaginitis; infection of the vagina. Usually, some form of vaginal discharge accompanies or symptoms like vaginal pain during sex or itching associated.
2) Uterine fibroid
3) Uterine polyps
4) Endocervical polyp
5) Pelvic inflammatory disease
6) Cervicitis (cervix infection)
7) Endometritis; infection of the internal lining of the uterus
8) Hypothyroidism (underactive thyroid)
9) Fluctuating hormone levels.
If you need to change the tampon/sanitary napkin in less than 2 hours, you need to go to the emergency.
The unusual smell in urine can be due to a lack of fluids/dehydration. You need to drink a lot of liquids. A urine exam and culture would also help to rule out urinary tract infection.
The following can detect/diagnose the cause of bleeding;
1) A physical examination and speculum examination by the doctor
3) Blood work for the hormones
4) Vaginal swab
5) Pap smear.
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