How to get rid of pinworms without going to the doctor?

I can't go to the doctor because we are a little tight in money, and even if I did she might not let me play football.

I unknowingly had pin worms when I was a little girl (I didn't realize it until like this year). They went away on their own, since I was too embarrassed to tell my mom what I was seeing. I did have some stomach pains because of that though. So, if you REALLY can't afford it, you wouldn't NEED to go, but the medicine makes them go away so much faster. I had them for a few months.