Left hip pain along with left ankle pain

Hello.. I'm suffering from severe left side low hip pain. The area connecting upper body with buttocks.the pain is there for past 1 year. I consulted ortho and he did X-ray and said nothing wrong with bones but muscles got tightened and has nodule. Gave anti-inflammatory tablets and physiotherapy for 15 days. But the same pain returned after a month, I consulted another senior ortho, seeing the X-ray he said bones are weak and need blood test. The blood test results gave vitamin d is 4 and b12 is 115.He suggested vit d vaccination (weekly twice), tablets (dolwin Plus, strong d3 and paracetamol). I'm taking only strong d3 as I don't wNt to take anymore pain killers or anti-inflammatory, as I took all these in the last Dr visit itself n no improvement .is dolwin Plus really necessary? Also, how to overcome this pain.. I took 4 vaccine until now but no improvement.I'm worried much as it interrupts my daily activity and for past 2 weeks, the left ankle Area also started paining. Plz help