Problems with a knee injury

Hello, I am a firefighter that was injured on the job about 2 months ago. I had my leg wrapped up with a large diameter hose that was pulled forcibly causing a twisting motion. I felt a pop and pain radiated through my knee and leg. I stayed in a standing position the entire time but shifted my weight to my unhurt leg after the initial injury. The leg and knee felt weak and I had trouble walking up any inclines. I went to the ER and they did X-rays and found nothing broken. They referred my to a occupation therapist. I iced the knee, with compression, elevation and Ibuprofen for a couple days before the appointment. The day of the appointment it was feeling much better, I was able to do the movements in the appointment with little pain and a small amount of swelling. I was cleared to go back to work. I had a hint of trouble when leaving the appointment, I tried to walk down some stairs and it was difficult and painful. Going up not much problem just going down. I was on an EMS call a couple days later and had to walk up some stairs to a 2nd floor apartment, I needed to carry approximately 6o - 70 lbs of equipment up the stairs but almost couldn't because of the intense pain that shot through my knee. I saw my doctor who stated it was a ligament strain that would take months to heal. I have had some improvement in the knee but I have found when I pull on my leg such as from tripping or catching my foot on something I have that intense pain that shoots through my knee with weakness in my leg. This is followed up with immediate swelling. My question is do I just keep using the RICE method or do I need to see a specialist. Is this normal for a ligament sprain? Tweet