I got a popsicle stick splinter stuck in my foot 2 weeks ago. i thought it had come out, but now my foot hurts even more. is it still in my body?

Fragment possible?: It is very likely that there is still a fragment of the stick still in your foot. Also, even if all is out, there is a chance there is infection and you would need to be on an antibiotic. I would get it looked at. Sometimes it is possible to get the piece out without a shot, but if it is too painful a local anesthetic can be used. Soak it in warm water and apply antibiotic ointment.