I started having severe bloat after a few years of high fat, high protein, low carb as well. Lowering protein, raising carbs, and not going so crazy on the fat has cured me of it. What does that mean in practical terms? I now consider 4 oz of meat as one portion, I make sure I have 1-2 servings of something starchy at every meal, and I cook my food in as much fat as it takes to make it yummy/not stick to the pan instead of using as much fat as I possibly can. It took about a month or two to start seeing results.

I would try ditching the eggs for a week or two and see if that helps. Also, all things that contain eggs (mayo, etc). By trial and error, I found out they cause me to swell/bloat/whatever. Duck eggs do the same (I tried that last week, still a fail). I'm hoping to add them back in at some point, but for now, they freaking hate me.

You should do a lactulose breath test for SIBO. If you have it, berries and even spinach could contribute to bloating and other symptoms. Carbohydrates and FODMAPs in any amount, basically. Theoretically, protein too, so this should be adressed sooner rather than later.

I'm not familiar with gallbladder problems, but they might contribute to malabsorption, making more food available to bacteria. Are you using digestive enzymes?

First I would suggest you to try HIGH-CARB, LOW FAT diet to see if it helps. High fat diet may cuase stone attack since galblader has to export bile far more then with CH diet.

You might be suffering from dysbiosis especially since your appendix is removed, which is thought by some to keep 'starter culture' of beneficial microbiota. I would supplement some high q probiotics and if dairy is not excluded lots of fermented milk, particularly kefir (alone, I find that yougurt and kefir in combination with food make bloating in some people). When probiotics are in question, you need to aim for highest amount possible of bacteria and highest number of different cultures. I wold also suggest taking several capsules at once multiple times a day for some time. You may also want to try pancreatic enzymes to help with digestion.

Swollen joints and permanently exhausted ... check your CRP, adrenal and thyroid panel. This may be sign of chronic infection. Maybe you are malnourished. I suggest you supplement lots of vitamins/minerals particularly C then D,Selenium,Iodine. C is the most important since its biggest probability that you are deficient in it on paleo diet.

Instead tramadlol, you may try LDN for pain since its lot safer with chronic use. Mg and Zinc might help you reduce pain more.

There are few pages here for supplementation, check them out.

Were you ever tested for celiac disease or gluten intolerance. If that's the issue, even very minor cc (cross contamination) can cause a lot of bloat for some people.

You should be screened for ovarian cancer, if you haven't already.

i would try to go high carb low fat. include lots of safe starchs and minimize the fat big time. i used to be on a high carb low fat diet for 8 years and was very skinny and did not have many stomach issues. i went low carb high fat paleo a year ago and i gained 20 lbs and severe bloating for a year straight. i find it helps if i avoid large portions of meat (reducing only to 1-2 small portions per week) and a lot less fat, more carbs. lots more carbs. my body didnt like paleo as much as i thought it would. so i am switching back, except with a whole foods template. paleo is a great template but you cant expect your body to work exactly as the "diet" is written. everyone needs to make their own adjustments. paleo is a whole foods diet. listen to your body. your bloating sounds severe. paleo "this way" is not working for you.

Sounds like SIBO, FODMAPs, etc to me. Please check out this site; she addresses all this in a paleo way:

http://www.eat-real-food-paleodietitian.com/paleo-diet-and-SIBO.html