Are there any patents I need to worry about that might keep me from creating my product?

Possibly! To find patents related to your topic, try searching in Derwent Innovations Index. Derwent pulls together patents from the US as well as patents from over 50 international patenting agencies. To find patents, search by topic (keyword), assignee (company that owns the patent), inventor (person who created the patent), or a variety of other fields.