question: i AM POST SPINAL FUSION SURGERY (2 WEEKS), EXPERIENCING BAD SCIATIC NERVE PAIN IN SHIN PROBABLY FROM WRONG MOVES YESTERDAY, HAVE TAKEN ONE tramadol 50 miligram 3 hours ago w little effect, have 5 miligram oxycodone tabs BOTH prescribed for post sugrical sciatic nerve pressure pain, ok to add 2-3 oxy codone to the one tramadol?