If you are having a continuous erection, then you need to see the doctor — possibly a urologist — as soon as possible. This could be a hormonal issue, and it needs to be addressed. If it's causing discomfort and is disrupting your life, your ability to sleep, then that makes this issue serious.

Again, you need to go see a doctor as soon as you can. I understand it can be embarrassing, but get treated so you can move on.