Can my workers comp. be revoked for golfing if i have'nt been told not to golf by a dr.?

i was injured on the job over a year ago and i have been fighting to get workers comp. it should go through within the next couple of months. i have been ordered by a dr. not to lift more than 20 pounds and with the narcotics they give me for pain i am not able to operate heavy machinery therefore not able to do my job. but no dr. says i cant play golf. if i play i hurt myself to the point where i have to lay in bed for a couple of days after but its my only vise. but am i in risk of losing my benifits by playing? and if so what can i do to keep from goin stir crazy sitting at home??? anyone familiar with these laws please help!!!