Dynamic Content + Segmentation + Campaign Question

This could be complicated, so I apologize in advance. I have 10 products that I am basing a campaign on. I have two emails in the campaign. The email is full of dynamic content based on a custom data object. If the contact visited a specific webpage for a product and didn't purchase the product, they should get the email and the dynamic content served up would be for the product they didn't purchase. The problem is my custom data object xls has all 10 products on it and doesn't specify which website the contact visited. So the rules in