My 58 yr old mom her left arm started to hurt today when she started to walk her hands turned purple she drank a aspirin & water don't know what to do?

Doctor or Emergency. Left arm pain is like chest pain in significance. Better safe than sorry. It could be heart pain, threatening a heart attack, or it could be something else. The purple hands might or might not be important. I'm sorry for the inconvenience, but get her to a doctor before the weekend.