Fall month ago, sprained mid foot. post injury invert foot, have spasms, constant twitching and swelling(with use) in arch. x-ray shows no fracture

Foot injury: This may take more time to heal and maybe trying a walking boot for pain relief. Another option is to get a MRI to evaluate for ligament injury.

Have it evaluated.: It is common for one to experience pain and swelling for several months following an foot or ankle injury. If the pain and swelling persist have it re-evaluated by a specialist.