Yep, been there! I was in a car accident that forced all the fluid out of my lower 3 discs- now my discs are degenerating and boy is that painful! But, thank God I found some relief. A pain specialist I called on (when I was in sales) gave me 4 exercises to do 2x a day- I've been doing them religiously since and have not had one back relapse yet!! I also found that activity was much better than inactivity - once I started trying to walk and warm those muscles they felt better.
If you can, your doctor might rx some physical therapy- the electric stimulation is AWESOME but temporary. It turns out most of my back spasms were caused by my hamstrings being tight (i.e. long plane rides etc.) so the exercises I do really loosen up the hamstring which relieves pressure on your lower back. First I would rule out a disc problem (bulging, ruptured etc.) but more than 80% of back pain is muscle related. Here are the exercises that saved me...
1. On your back with your knees bent, raise or have someone raise one leg keeping your knee slightly bent and have that person or you can use a towel around your foot to pull that straightened leg towards your head. Once you get good at this- try and stretch the other leg to the ground as you pull this one up- switch sides.
2. on your back with both knees bent, cross your left foot so your ankle is resting on your right knee. use your hands to pull your right leg into your chest. switch legs and repeat on other side.
3. in the same position as above, with one of your feet on the ground and the other one resting on your knee, outstretch your arms and slowly lower your foot that's raised to the opposite side, this also stretches your back and repeat with the other side.
4.sitting up with legs straight in front of you, bend your left leg and place your left foot to the right of your right knee. Take your right hand and stretch behind you with your left hand on your knee trying to twist your torso- this lengthens your back muscles. Repeat the other side.
I wish I could draw you a picture- I've used these exercises with so many people and they are amazed at the difference and lack of back pain. I suffered for 4 years and was facing surgery- it's been 4 years since I've had an ER visit and I am so thankful!!
Here's to a speedy recovery- don't worry about your diet/exercise- that will all come back with time- just work on feeling better soon!!
Tara