Chupe de Camarones (Peruvian Shrimp Chowder)

Ingredients

• 2 lbs shrimp with shells and heads
• 4 cups water (more if necessary)
• 2 tablespoons olive oil
• 1/2 small red onion finely chopped
• 1 clove garlic clove finely chopped
• 1 tablespoon aji panca chili paste (can substitute tomato paste if necessary)
• 1 teaspoon aji amarillo chili paste
• 1 cup peas either fresh or frozen
• 1/4 cup long-grain white rice
• 1 ear corn (1-2 ears); cut into 1 1/2-inch chunks
• 1 lb russet potato peeled and cut into 1 1/2-inch chunks
• 1 teaspoon salt (to taste)
• 1/4 cup queso fresco cut into 1/2-inch chunks (1/4 to 1/2c)
• 1 cup evaporated milk
• 1 tablespoon Fresh Oregano chopped
• 3 Eggs