A couple of weeks ago i fell and hit the ground face-first (more so the right side of my chin). now i hear strange popping, crushing and grinding sounds when i move my jaw?

Clicking : After a fall on the face, it's possible that you have injured the TMJ joint. See a doctor

Have it checked out: The temporo-mandibular joint is a complicated and delicate structure and you need to have this problem checked by a dentist or oral surgeon who knows about it and is familiar with how to diagnose and treat the area. Take my advise, get it checked out properly.