Numbness on right side of the entire body for 6 months?

Hi im dany 24 years old no history of stroke and heart disease..im a seaman , smoke 5 sticks per day..6 months back suddenly i felt my one side of the shoulder getti weak later within 2 days my entire right side is 10 percent weaker than my left..i took MRI and discovered sinus on my left side of the face..im doing my normal routine jobs no prbs in that..no headache , no difficult in talki and walkin..but im afraid wats wrong with me..can u Plz advice me wats my prb and wat medication i hate to follo..awaiti ur reply