Hi,burning in urination , itching and irritation in vaginal area should i start a broad spectrum antibiotics ?

Depends on diagnosis: Treatments vary by condition, so it's important to know which type of vaginal infection you have. Types of vaginal infections are bacterial vaginosis, yeast infection, chlamydia, trichomonas, viral (example herpes). You should see a doctor.

See a MD first: it may be a UTI (urinary tract infection) but you want it confirmed by a MD first before antibiotics are initiated. The Center for Disease Control (CDC) have been warning MD"s about inappropriate antibiotic use for years and we are now seeing resistance to all antibiotics bacteria that is due to Rx not needed. This can have life threatening consequences in the future for all of us who become ill.