Take it off ASAP and check that the frame isn't bent, or the crumble zones are not damaged. If they are, you may be better off filing an insurance claim and having them take care of it. Chances are that you already filed a claim to pay for the damages to the other vehicle, having the insurance company fix your vehicle too would be included in the deductible for that accident and considered part of the same incident. My wife was hit in a turn lane while driving our Tundra, the damages looked very minimal, but when the body shop inspected it, the winch bumper was a bit tweaked, and they fixed it up and re-coated it. A few weeks later, I found that the tire on the impact area kept loosing air, so I took it to the tire shop. Tire shop said that the rim on that wheel had a hairline crack, and showed it to me. I took a picture and sent it to my insurance company, and they gave me the go ahead to buy the replacement wheel and they reimbursed all costs related to inspection, replacement, etc. even though the accident was like 3 weeks prior. We all pay the money for insurance, so use it, its the point of having it, right? Its a totally legitimate claim to have them look at it and handle it as part of that accident, regardless of when you discover the previously unseen damage.