Energy level is very low?

If a lot of the soy products are bothering you, you could try other sources of plant protein. I'll attach a link to this answer with some alternatives. One thing I could recommend to you is a creatine supplement. Creatine is a nutrient normally found in meat, and vegetarians don't get a lot of it. According to Wikipedia(I know, bad source), about half of the body's stores of creatine comes from food(meat). If you have a creatine deficiency, you could improve your energy level and cognitive function with supplements. Creatine CAN be animal-free, so check around for it. However, there could also be other, non-dietary explanations for this lack of energy. Does this lack of energy seem to come and go? If so, at what times of the day do you feel this energy drain? If you have a large meal at some point in the day you could be creating a spike in your blood sugar. The crash from this "sugar high" could lead to those symptoms. Also, how much sleep are you getting and is it of decent quality? I suggest you talk to your doctor and: 1. Get a checkup with blood work, and see if you are deficient in any nutrients or suffering from any diseases or chemical imbalances; and 2. Ask him or her about alternative forms of exercise that can work around your leg injury. My first thought would be to involve swimming or water in some way. This would greatly reduce the impact of exercise on your injured leg and allow you to get some much-needed cardiovascular exercise.