Ob-Gyn questions? Ask a gynecologist online.
It sounds like your major issue is the vaginal itching. This is the gyn issue in your question. Monistat will not always treat yeast infection. Some are resistant and require Ticonazole or clotrimazole. In addition about 2 % of women may have lichen sclerosis. It's a skin condition like psoriasis in the genital area. It's treated with a specific high dose steroid creme. You would need to see a gyn dr for this.
Bioidentical hormones do not cause this. If you're lacking estrogen you coukd have atrophic vaginitis. Many women are allergic to parts of the Bioidentical regime.