Simvaststin symptoms and conditions

I am a 58 year old female Who has been taking Simvaststin for 16 months .
I have been increasingly bothered with mainly night leg pain ( bilateral) that radites to my hips and back. It's like a tooth ache. I too have had to resort to taking pain medication at night to sleep. During the day when I sit for long periods my legs ( especially the thigh area) aches and standing up , walking etc does not alleviate the ache. It is not constant at this point but very frustrating.
After reading the posted notes I am contemplating going off the Simvastatin for a while to see if my symptoms improve.
Any thought?

Thanks!