Didn't you just worry about penile cancer? Look up the word hypochondriac, because that's what you are. Every little cut, bruise, and scar is not a malignant tumor.
You almost certainly have either a hemmorhoid, or an irritation from a large piece of stool. And you've only noticed it for two day?!?!?
If you see a doctor, you tell him what you said here. He well put on a glove, lube up, and stick his finger up your rear. He will also have a look-see. It's no big deal.
Did you ever have the circumcision? I assume you already have a close relationship with one or more doctors.
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Our lives begin to end the day we become silent about things that matter. -- MLK
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LOL, let's hope it goes away on its own. But I am worried about it. 
