Yikes, that was a nasty hit. Glad to hear you are O.K. Might need some ibuprophen for a few days for pulled muscles. Watch out for any late pain related to whiplash. If you start to feel stiffer as the week goes on might want to get it checked out. I was hit from behind on the freeway a few years back. Seemed like I was fine until two hours later I couldn't turn my head. Mostly stiff muscles, which hot and cold packs helped and Ibuprophen did wonders!