Why do you hate women?

I am a medical student. In my year, there are 71 medical students and we got our class list last week. We gave some of us nicknames to identify and share the class list. Among 71 students, there are 5 guys and 66 women. I woke up to the news that I was branded with the nickname "Eunuch". I was in shock seeing my name, "Eunuch". I can't believe that most of my classmates are women and they call me a "Eunuch". I don't know what to do or where to go. I just can't tolerate all this bullying and harassment from most of my classmates. I have no courage to go to class now. I am heartbroken.