Hey there!
Sorry to hear you are suffering pain. I too have suffered from pain in my left-hand side for several months now - intermittent, sometimes sharp and other times not. I didn't go to the doctor (asides from anything else you can't get an appointment for love nor money where I am!) but did lots of reading online and think mine is food related. I stopped eating the copious amounts of raspberries every day (I think the acid doesn't help), cut out Pepsi Max (not sure aspartame is good for anything anyway), cut out most processed foods like sausages, bacon and all cheese, no more crisps (just the occasional popped-rice snack) and added oats and more vegetables and eggs to my diet. I still get the occasional pain there but nowhere like as it was before. Yes, the oats cause an excessive amount of derriere wind the following day but I feel it is helping my cholesterol level.
My next mission is to try and tackle the acid reflux, which again only happens occasionally. I'm thinking this too is food-related but can't see a pattern at the moment.