Fell, around my knee is still swollen after a week— should I go to a clinic?

I fell and hit my bed frame quite hard a week ago, just below the knee— about an inch or more below my kneecap. I got a decent bruise that is healing, but the swelling doesn’t seem to be going away as quickly; and beside my knee, almost above it toward the inside of my leg appears swollen. I also didnt think much of the ‘injury’ and walked on it for two days after two days of rest. I’ve been trying to stay off of it since, but it hurts and is far sorer than before. It’s uncomfortable to sleep and sit in certain positions and hurts to touch. Is this something I should take serious? Or will some icing, heat, and rest be enough?