Ice is a good start
A second thing is splinting.
If you are swollen even if you do not have a fracture a bruise to the joint will casue swelling in the joint. When that happen the joint tends to stay bent capsule's maximum volume is at has a degree of bending. The swollen tissue and fluid "pushes" the joint into that position
Cool down after activity with ice, warm up before activity and work on gentle range of moti