Suggest Treatment For Difficulty In Bending Big Toe Post Injury

I cut the top of my big toe on Friday (horizontal cut, 2cm long, across the top of the big toe just below the toe joint) and it was healing up fine until yesterday when I accidentally kicked something. Now I cannot lift the tip of my toe (i.e. completely straighten my toe joint). I can bend the toe down at the joint but cannot fully straighten it. My toe feels limp...What could be causing this? Is it permanent? Is there anything I can do to diagnose/fix it? I don t have insurance or money to go see a doctor at this time. Thanks, Ben