Severe upper left to mid abdominal pain, sometimes radiates to back

It could be kidney stones..IDK..I went to the ER and had a CT and it didn't show the 10.7 mm stone my urologist found with his ultrasound.. whew!! The ER dr was sending me home and discharged me.. and I went to the bathroom in there before I left and almost fainted..and went back in and said "I wanna talk to him..".. he gave me morphine..and said go see urologist..and changed the discharge papers to include "renal cholic".. ohh it hurts so bad.. and it took atleast 2 months to pass the stone.. I have IBS-C and I thought it was stomach trouble for the 1st week..I went to another urologist and he did a CT and no stones showed up..( he was going to take them all out) .. I went back to the urologist with the ultra sound and he mapped them out for me..4 each kidney.. it's a medical catastrophe out there... And oh.. I had a HIDA scan on my gallbladder..and they took it right out..another long stupid story.. but it's out..prayers for you!!

@standinginfaith Thanks so much for the comment and the information I really appreciate it a lot!! So the stones didn't show up on CT scan, I wonder what else don't show up as well. There's something wrong or I would not have this pain and it happens when I eat all the time .

Sounds like acid reflux because sometimes I get that discomfort. Try an antacid.
I have gastritis and IBS which effects me taking drugs.

Here some suggestions for ya:
1.) See a Functional Medicine Dr. Some insurance companies help pay on it and some don't. Be prepared to pay more for the Dr. visits, etc... I am seeing one right now. My Dr. spends a lot of time with me, she ordered a whole slew of blood work testing on me. It took over an hour for the lab to get all my vials and paperwork ready for it! They should do food testing on you, if they don't please request for it to me done. These are alternative type Doctors who are M.D.'s but are taking the non-traditional route of approaching health care. They do things that other Dr's don't do. When you have more complicated issues or mystery illnesses/pain, you have to get to the nitty gritty details of what is going on. Your primary care Dr. can refer you to other specialists and order tests, mri, ct's, ultrasound, etc... Sometimes you get "everything is normal", when it is not normal. Trust me, it is worth every penny. Or find an internal medicine Dr. who is not affiliated with a hospital or has his own office.
2.) Food Testing- have you had this done before? Any allergies or food intolerances? Have you done a food journal? Try doing a food journal, if you have never done one. I am gluten, dairy, wheat and egg free. I had acid reflux and having diarrhea and throwing up awhile back and got tested and found out I have an intolerance to wheat, gluten, dairy and egg. It has helped me tremendously. Definitely more difficult eating out, but much safer for me. If you have never had the testing, then you don't know. 2 different types of food testing- the lab-bloodwork kind and then the allergy Dr. testing-prick kind in office on your back/arm. Good to have both, but I have gotten different results from each of the tests. Don't rely just on the allergy Dr. testing, as that won't be all accurate. Usually, the bloodwork testing is done by alternative/functional medicine Dr's.
3.) Keep a medical journal of your symptoms. I use Clever Fox's journal for medical issues. It has a symptom tracker in it, and it is great.
4.) Reduce toxins- chemicals in your home/car/area.
5.) use filtered water- I have a reverse osmosis system that is connected to the kitchen sink. Do you drink tap water? Our water has problems. I use a shower filter as well. The filters need to be changed every so often.
6.) cut back on processed foods-frozen meals, take out, boxed type foods, etc...
7.) Use a Chiropractor- if you are open to that. It may be something with your back, where you pulled a muscle and your having pain from that. They do adjustments, most will take an X-ray before adjusting you. You may see relief from that.
8.) Massage therapy- I love getting massages, there is deep tissue and other kinds. I love them. Accupressure is good too. It is worth a try to see if that might help you out.
I am sorry to hear about your pain. I have had pain in my upper right hand part of my abs. A lot of times it is after I have eaten meat. I got an ultrasound and they found out I have fatty liver disease. I had an ultrasound of my liver and spleen. I have granulomas too on my liver and spleen. I have CVID- Primary Immunodeficiency. I see an Immunologist and I do weekly infusions to put "good antibodies" into my body, as my antibodies are on a permanent vacation. I hope this helps and good luck in finding out what is going on.

Have you had an upper endoscopy yet? If you haven't had one, it might be worth checking into with a gastroenterologist.
They will go in and take a biopsy and send it to the lab to make sure everything is ok. If there are problems, they would be able to see it with the camera that goes down your esophagus.

Have you tried Omeprazole over the counter to see if that will help or Tums or something like that? You could try digestive enzymes. I use them especially when I eat out, to avoid cross contamination. I am gluten, dairy and wheat/egg free. Occasionally, I will cheat and eat a little cheese, so I take a digestive enzyme to help me digest it better. Not good to take a digestive enzyme all the time. I only do it occasionally. Try eating slower and drinking more water. Chew your food up more thoroughly, that might help. Sounds like you are having some sort of reaction to food or something in the foods you are eating. Do you eat spicy foods?