I would strongly recommend that you go to a doctor, and forget about the embarrassment. I had the same symptoms and was also embarrassed. I finally gave in and went last week, had a colonoscopy and have been diagnosed with anal cancer. It's very treatable, but it will not be a good experience, and if you do leave it alone and don't tend to it, you could risk it causing more harm. Please, please, please put your pride aside and see a physician. Don't take anyone else's word about this being an infected hair or any other sort of issue. Find out for sure, for your own well being and own peace of mind and health.