Calf injury. To that extend that i limp.

Hi, I am suffering from "Right Calf pain" precisely at between where gastrocnemius Medial-lateral ends but felt deep as it is in Soleus. Tingling and constant burning sensation not numb though. For long time, an injury occurred about 8-9 years back and negligence to care & no proper exercise after that. 2016 I tried physio therapy and then some medication - Enzo Heal-D and one med sadly I forgot the name. One month course medication, relief only lasted till the said course. Did ultrasound and Doppler all negative. At present I am doing fitness (I am obese 163cm 83kg) and my trainer said that over the time of injury and no proper exercise, stretching I have developed a weak hamstring and overly active calf. And my right calf is visibly large then my left calf. Done foam roll release techniques but no improvement. The calf pain hinders me in my task and worsened that now I feel pain in my buttocks and Achilles' tendon to the heel portion. It's severe but not to that extend that I limp.