I replied to your other post. I understand your concern and regret. You may be fine with just one ovary. And if not, a prescription for estrogen can reduce symptoms and mitigate some of the health risks of lower ovarian hormones.
I know of a case of an ovary transplant between identical twins. But any other scenario would require that you take anti-rejection meds for life.
I can understand how this is weighing on you. I've been plagued with regret since my organs were removed. Counseling may be helpful. Also, speaking out on your experience and what you've learned about the importance of our sex organs may be cathartic. Otherwise, try to live your life. Just be aware for any signs of hormonal deficiency so you can address them. Also, make sure your medical history includes unilateral oophorectomy.