Hey Barbera,
I have a lot of lower back, neck and shoulder pain too...I know that I have a lot of chest weakness, so I assume that I'm straining my working muscles on account of the 'dead' weight of my chest muscles...Do you have 'bad' posture? This might be a sign that your neck/chest are weak....
It might help to strengthen your 'working' muscles, especially your core....When I had a bit more strength in the past, I tried to exercise my stomach muscles as much as I could...It's really hard to do sit ups now, but it IS possible...Just a lot more rests in between sets...The stronger our muscles are in general, I figure the less pain we'll have...But definately don't over-do it, listen to your body, but sorta ignore it a teeny bit too (no pain, no gain

).
What are your main symptoms, btw?
ttys and I hope this helped a tiny bit!