Pain in Rib and Back Right Hand Side

I have had pain in my rib right hand side just below the breast which radiants sometimes around to my back.  It is not through an accident and from when it started a few months ago from being on and off, it now seems to be more constant. I am forever pushing on this dull pain and it is really getting me down.  If I wake in the night and I have been sleeping on my right hand side, the pain can keep me awake for a while as I have to turn over or lay on my back until it subsides.

I have been to the Dr's a few times and they just tell me that a previous scan for my ovaries shows that there is nothing showing which is of any concern (I had a CT scan on my abdomen and Chest in April this year).  I have had a gall bladder scan a few times (the last about 18 months ago which I was told at the time all looked fine).  

I had Bowel Cancer nearly 8 years ago now and I know that I do worry more about pain etc.. than I used to do.. and the Dr always asks me if I am worrying that it has come back.  So to me they just think it is in my mind.  They always look back on my notes and tell me when I last had a scan for this and that (like I dont know myself ) My last Colonosotophy (sorry for spelling error) was in October 2009 which was all ok.

I am at my wits end to what this pain is and to what I can do.  I dont take any pills as I try not to take anything that is un-necessary.

Does anybody out there have the same problem or think of anything I could try.

thank you in advance.

[Caryopteris]

It sounds like shingles, except then there would be painful blisters too.  Next thought is costochondritis, which is inflammation of the cartilage around the ribs.  It is painful, but otherwise not serious and just takes months to settle down.  I have known SEVERAL people who have been through this, even though it is supposedly rare.