I have 3 herniated discs from L2/3, L3/4 & L4/5. Original on set of spasms & pain was on right side, with numbness to right toe. Now pain has shifted to left side. With spasms and radiating pain in left buttock, hip, left side of leg to ankle. Now right foot is swollen & getting stabbing pain in toe, where it was numb before. It has been 3 weeks & no improvement. Have had 3 physio sessions. Is the selling of foot due to medication Lyrica & Targin. Or nerve pressure from herniated discs?