Re: please help. very detailed. what could this be?
I would say check with your doctor first and do Blood count test if you want to rule out things. Must be cheap as well to get it done.
Have you tried taking buscopan ? this might help relief you from symptoms of IBS. Well i ahve had GI problems for months and luckily have insurance so have been through a lot. The only thing that helped was MRI or CT scan that showed something . If you do the whole abdomen this should clearly show all organs kidney, spleen, stomach, small bowel, colon etc. MRI is better as its magnetic. Do the one with contrast. If you can afford it but if you can't then an ultrasound can still look at kidney, spleen, liver, Gall bladder etc. but it wont be able to see your GI tract which I reckon should be seen. Having said that this would just be an indicator on where to look and possibly what is wrong. Once done for example if its GI tract up to stomach or deodnum (small intestine) then you can take biopsies from there. If its jejunum then capsule endoscopy or double baloon endoscopy. If its rectal or ileum (Lower part small bowel) then colonscopy would help. So you can see its a step by step thing and can end up costing money. If i was you I would see if the cost is too much you can always go to an Aisan/European country and have it done there cheaper and much much better service. I had private insurance and nobody did anything here its only when i went abroad and had a ct of my own money they found out that there was inflammation in the small bowel.
So don't stress your self. If you have any further questions let me know I will see if I can help. I have a few dr. friends and a GI friend and can ask him as you are struggling with finance but honestly I think this is all what they would say as well. These are all the possible investigations for GI.