Regarding the diagnosis of ligaments, the first is to rely on symptoms and physical examination, in which the physical examination can bring some reliable information, such as the medial or lateral ankle has a clear pressure point, or in the foot forced inward or outward turn pain can indicate that there is a ligament injury. Secondly, there is the possibility of imaging, in which X-rays can be used in forced inversion or eversion of the foot, and an increase in the ankle gap compared to the normal healthy side can indicate ligamentous injury. These methods in different degrees of ligament injury may present different degrees of performance, but in doing these tests at the same time, your ligament injury may have further aggravation, so for experienced doctors they generally will not give you to do these tests. Finally, if you want to determine the extent of your ligament injury, MRI (magnetic resonance imaging) is a good test that can show a clearer picture of your ligaments, but it is generally expensive and not recommended by your doctor for ligament injuries.
It is normal for you to have localized swelling 2 days after the injury, and in many severe cases up to 1 month. At this time you should pay attention to is to listen to the doctor to continue to bed, braking, necessary is the auxiliary tools to control the ankle joint activities, only braking is the best way to recover. In addition, you can go to the regular Chinese medicine hospital to find some external medication, can promote recovery. But it must be a regular hospital, can not be a wandering doctor's ancestral secret recipe or prescription or something, because there are some things there is a hundred harm and no benefit.
I hope this can help you, wish a speedy recovery ~!