In the last 13 years prior to going rawpalaeo, I would get massive, very painful stomach-aches every so often. After years of switching diets to raw vegan/fruitarian/sproutarian , I finally discovered that these pains only occured after I ate any cooked animal food. When I, as a last resort, switched to a RVAF diet and started eating raw animal foods, I duly found that I did not get those pains from eating such. Also, most of my other health-problems disappeared within a 4 month period(though, admittedly, most RVAFers facing serious health-problems generally take 2-3 years of eating RVAF diets before they fully recover). I did have to adjust by aging the meats a few days at first so as to tenderise them before eating, as my teeth were on the verge of falling out after so many years of ill-health.
On reading info online, I got the impression that an inability to eat(cooked) animal food had to do with a burnt-out adrenal gland. However, I have no idea as I at the time had so many different health-problems all over my body due to mass inflammation caused by a delayed-action dairy allergy, so it could have had multiple causes.
Everyone is different, so do not necessarily assume that your experience will be the same as mine.If you are overweight, I would recommend water-fasting for 10 days or so at first. Some RVAFers like to do 20 days before going RVAF, but that is a bit much for someone new to fasting.
I too experienced a brain-boost when doing my all-raw-animal-food experiments, but I was terrified to find out, after c. 3 weeks, that a lot of my past health-problems pre-RVAF diet were starting to reappear. I really wouldn't recommend it, since you already have issues with the all-cooked-animal-food diet. You might consider trying "high-meat" every so often as that also gives a brain-boost.
It might be an idea to do 95% raw veg/raw fruit/raw sprouts(preferably organic), and only 5% raw meats, at first. Make sure the raw meat is of high quality(ie 100% grassfed or raw wildcaught seafood or raw wild game). You can always increase the amount of raw meats as you get used to it all. In case your problem is specifically the digestion of meats in general, as opposed to just cooked meats, it might be a really good idea to age your raw animal foods for a few days, or even switch to eating lots of "high-meat". You see, all the extra bacteria in the aged raw meat help to predigest the meat, allowing your digestive system to make far less effort in digesting the meats.
I've read a few of your posts on here in which you talk about the 3 week mark - it's interesting. The last time I did zero carb on cooked meats it was around 5 weeks and I'd never felt better but just couldn't take the stomach pain any longer.
One of the things I'm most curious about is whether raw meats are easier to digest but particularly if this is because of the natural enzyme content which is destroyed by heat when cooking. I've had some success taking lipase supplements in the past which really firmed my turds up and helped with the stomach pain. It's prohibitively expensive tho... I read that raw foods including meat have the enzymes needed to digest them but I've also read that these are destroyed in digestive transit, which I don't agree with as otherwise my lipase supplements would not have worked. I guess the only way to know is to try as it's entirely subjective due to genetic variation. Raw is the last throw of the dice for me in the 'natural' way.
What are your thoughts on salt?? I didn't feel so good this time round without salt as I did last time with it. But I can't really imagine sprinkling sea salt on mince beef ... I found that I didn't have cravings for anything after a week - carbs, alcohol, masturbation even but these persisted this time round without salt. I don't know if this is because I need salt or if it's because I was still detoxing from the chemical ...?