Experiencing pain and over stress

I took my medicines after my dinner because I am not feeling well. I worked whole day in my garden arranging all the plants in line and segregates all the used plant liners according to their sizes so that when time comes when we'll gonna used them, it would be very easy to locate. After a long period of work I felt so tired and my both arms are aching that includes back pain and headache. After 5:00 O' clock, I go straight to the pharmacy to buy mefenamic acid 500 mg., a pain reliever and other medical tablets to control the pain. I hope I will be relieve after a couple of hours so that I can still make my other duties in the house.