Yeast Infection Question

Hi,
Welcome to ehealthforum,
It is difficult to comment on your infective status (and infective agent) without examining you. If infection is suspected, you should consider visiting your doctor/gynecologist for at the earliest for thorough examination, vaginal swab/smear test to look for the underlying cause.
For the red skin lesion on thigh and vulval area that you describe, consider taking an opinion from dermatologist. A skin scraping test done from the lesion that you describe will help to look for underlying cause.
Treatment as appropriate (based on examination findings and investigation results) would be started to help you control the symptoms. Avoid vaginal douching, or use of harsh soap or perfumes in the area. Use loose cotton undergarments and avoid use of tight fitting clothes. Be in regular monitoring and follow-up with your treating doctor/gynecologist and report any new/abnormal symptoms immediately. Drink plenty of water. Take adequate rest. Maintain healthy diet and lifestyle. If infective cause is detected, and if you are sexually active, get your partner also treated simultaneously to prevent chances of re-infection, and avoid having intercourse while being on treatment.
Take care.