My Back is Killing Me!

I have a feeling that my back was not ready for 45-50 minutes of steady 65+ mph riding in gusty winds. My back is killing me. I think I aggravated an old injury I got when I came off a young green horse four years ago. It took me 6 months of acupuncture and chiropractic sessions plus another 6 months to get me back to almost normal from that ordeal. I had severely bruised, strained or damaged all my core muscles, came close to tearing my left psoas and displaced my hip. I think between bracing for the winds, nerves, bike vibration at higher speeds and balance fatigue from (3) higher speed forty mile trips in 2 days did me in. I'm on ibuprofen, doing cold showers on my lower back, Olbas oil rubs and a little bit of stretching to help. This means I will be staying off the bike except for small street rides until I can heal up. My class is next weekend and I don't want to have to deal with a screwed up back while taking the class. Too much too soon and I paid the price. I need to get up and walk a little now. If I sit for too long I stiffen up and getting up is painful. This sucks big time.