Hi,
Welcome to ehealthforum,
It is difficult to comment on the symptoms without examining you. The red and itchy labia along with spotting could suggest infective causes (not necessarily just yeast infection). The exact cause can only be made out after thorough evaluation and vaginal swab/smear test to identify the causative agent. Treatment as needed (based on examination and investigations results) would be started to help you. Be in regular monitoring and follow-up with your treating doctor/gynecologist and report any new/abnormal symptoms immediately. If infective cause is detected, and if you are sexually active, get your partner also treated simultaneously to prevent re-infection. Take adequate rest. Drink plenty of water. Maintain healthy diet and lifestyle.
Take care.