What can I do if I have no privacy to masturbate?

I used to always masturbate at least once a day before I came here to college. However, now that I have a roommate, I can never find time alone to masturbate. I feel a need to masturbate at least once a day, but now I can't go through with my urge every day. Thus I start thinking about masturbation during class, and it's really affecting my mind. I need to masturbate or else I can't function correctly. Please help me out. Maybe there is another means to get out my sexual urges.


Is what I'm experiencing a urinary tract infection?

I think I may have some kind of urinary tract infection. It came on very suddenly, about three nights ago. And when I pee, there is a burning sensation when my bladder has almost emptied. It's not an STD because I'm in a monogamous relationship, and yes, I'm sure! Please help. Thank you.