Welcome to HCM
We understand your concerns
I went through your problem description and I am sure that you don't have to worry at all. You are an MBBS student and I am proud about you. Vey good.
People do feel week after a weeks illness and it takes some time to come back to normal self. To get active sexual urge, it might take two or three days. Candid
B is not going to interfere with your sexual life.
You should be pprehensive about your sexual feeling. We normally don;t get erection when we are tired, and when are anxious about it, then it is bound to trick us. Try masturbation
when you are feeling fresh without any anxiety
feeling about it and you are bound to succeed.
Please donot worry or be anxious. Enjoy.
Please consult a psychological counselor if need be.
Hope I was able to clear your doubt. Available for further assistance.