I was playing soccer and a guy stepped on my foot. my left big toe now has like a clicking sound when i twist it. an x-ray has revealed no broken bone?

You may : Have a soft tissue injury, like a torn extensor hood apparatus, tissue which holds the tendon down and so you may be hearing the extensor tendon moving out of place. A dynamic ultrasound or MRI can confirm diagnosis.

Inflammation: May be you have fracture but inflammation in the joint and around the tendons which could cause the symptoms, use advil (ibuprofen) 2 tablet three time day with food for about one week and warm moist heat may be that will help you.