Do you do any exercises to try an relief and correct the backache Rickman?
Pain in the chest can be from lack of breath and can make you feel abit melancoly.
What bakedpotato said...
´when pushing buggy try to visualise your legs doing the pushing, rather than your arms´is good advice. This is similar to the advice given with the Alexander technique which is all about body posture. Walk out from your hips / top of legs and not from your upper body.
Good exercise stand with your back to a wall and your knees bent like you are sitting in a chair. Try to press all your vertebrae into the wall and then relax... repeat about 10 times.
The downward dog is excellent for the spine... described on this site - the chair makes it not so hard.. normally your hands are on the floor. down dog
the cat / dog stretch is often seen as the best flex for your spine. Here is an example.
this
There are loads of sites on the web for backpain... yoga related. Have you ever tried Yoga... you sound like you need ongoing exercise for your back and not just a visit to the osteopath. I have lived with a back injury for the last 10 years and have learnt much about managing my own body and spine - saves money on pills and visits to the osteopath.
Hope you feel better soon.