How do I get rid of this thigh pain? Do I need to see someone?

You need DX. How to treat and hopefully get rid of pain requires that you find out what causes the pain. There can be many causes of pain. Sometimes it is a muscle or ligament injury; that will usually heal by itself. More serious injuries may require injections, splints/casts or even surgery. Sometimes thigh pain isn't even in the thigh, it's in the spine. See a doctor for the diagnosis and treatment.