I have a lump on the opening of the anus, like a small pea, mildly painful, no fluid, no itch. Believe it's hemorrhoids. Help (w/o seeing a doctor)?

Go nothing for now.. You're probably right, and just watch it for next 2-3 weeks with no physical manipulation. If any doubt, still see a professional timely. Without a good history and physical examination, no conclusion can be drawn. Best luck...