Winstrol is known to dry out joins, this could be part of that problem. Also did you test your Anavar and make sure it is Anavar?
If your Anavar is real I would stop the Winstrol and see if symptoms get better. Also are you taking anything for liver support and how long have you been om cycle? finish this cycle just on Anavar. you want next level I would research Primo for your next cycle.