@ebrahim, Welcome to Mayo Connect. I am a liver and kidney transplant recipient with no medical background. I commend you on your successful transplant and your desire for a medical degree and career. Being so near to your goal, I am sorry that you are faced with this difficult decision.
Might I be so bold as to remind you that you are and always will be a kidney transplant patient. And that is a good thing because of the valuable experience that you will bring from the patient's point of view.
My first thought is for you to have a conversation with your own transplant provider(s) about this.
My second thought is that I wonder if you could investigate whether you can be a doctor who works behind the scene and does not require face-to-face contact.

Here is a link. And I invite you to post your question there. Some other medical providers have similar questions related to their own current situations. They might be able to provide their thoughts.
COVID-19 and Transplant Patients
https://connect.mayoclinic.org/discussion/covid-19-in-transplant-patients/
Keep in touch. I look forward to addressing you as "Doctor" someday.