Any Side Effects If Gupisone Prednisolone 5mg Is Taken An Extra Dose ?

I was given gupisone prednisolone 5mg to be taken 3 times for 7days day 1st does 2tabs n rest 1tab 2times N next day 1tab 3times but misunderstanding had taken 2tabs morning dose for three days,n rest 1dose aftr n night ,i would like to know if any side affect or not but today is my third have taken 2tabs morning but i am having heaviness on left arm n pain on shouldr n back.pls advice me wht is the solution .thnxx