Extreme thigh pain after posterior hip replacement

I’m 28 I had a posterior hip replacement left side on Nov 1 this year. I have been experiencing extreme pain on my thigh on the front outside and front inside     It feels like my muscle is ripping, hardening, and getting shocked like little sparks hitting my muscles under my skin. This is happening when I sit in a chair or stand up. The only thing that helps is massage and putting heat on it. Has anyone else had this experience? And if so what helped you? How long did it last? And did it heal itself? 

This was my 5th surgery I have congenital hip dysplasia. I just want to get back to the gym