i was bending down slightly today and something happened to my back and now i cant bear any weight on it at all.  no pain while seated,  no pain lying down.  cannot bear any weight to get out fo bed and walk a few feet.  no pain shooting down leg.  now using heat and ice till i can call doctor in the morning.  what is this and what do i do?  thanks.
Hallo dear friend i he studied your case there might be muscle spasm due to sudden flexion of spine this is you first episode or repeatedly having same problem you need methylcobalamine, muscle relaxant with analgesic[moral plus]take rest, , hot or cold fomentation avoid lifting weights sit with taking support to your back continue spine extension exercises physiotherapy - SD, IF TWILL HELP you may need MRI SPINE if pain doesn't get relived for further query contact Chat Doctor. Com