I am into 3rd month after lunge surgery, I had stage 3 small cell cancer, surgically removed via 3 small incisions. my recovery is slowed down now because of enlarged liver, iam still on pain killers. tec 3 was on high doses of tramadol with accetiminephen.... I think its the accetimeniphen ,am I safe to stop pain relief? or switch to ibruprofen??