德国牧羊犬的训练方法:请英语高手翻译（急！）

I bought it would be interesting to read about some of the embarrassing moments.
During my first week of ever being in high school, I was looking for a table to sit at for lunch, since my friends and I had to find our main location, we had some work to do, we all settled on a half-filled table with some fairly nice sophomores() sitting down, we all started conversing and everything was fine.
But then my nose started bleeding. It took some time for the other people to notice and I kept a little low to avoid drawing attention to myself, I had a handful of napkins() with me at the time, so I just used them to stop bleeding. too bad for me, it was the worst nosebleed I ever had. After about 5 minutes of fighting the nosebleed, I was noticed. After spending around a minute trying to convince() my friends I was fine, I gave up and agreed to go to the Principal's office to ge myself cleaned up. After successfully stopping the bleeding, lunch was already over and I was late to class. Luckily for me, my friends were kind enough not to spread this all over the school. I had some touble walking down the halls for the next hour, and didn't make eye contact with anyone sitting at the table for the next week.