"moderately paleo" doesn't tell us too much, we don't know what you're eating. It's likely what you can remove from your diet to help with the bloating, not what you can add. But we need to know what you're eating first.

Sometimes the switch to Paleo can bring on some unwanted symptoms, especially if you have underlying problems with gut health. I have found a lot of help with bloating when I follow a Paleo protocol for SIBO (small intestine bacterial overgrowth). You can learn about it here:

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

It has also cleared up a lot of abdominal pain that started when I switched to Paleo several years ago.

Different foods can cause this for different people - when you changed your diet, did you introduce (or start eating more of) anything in particular?

For me it's oats; for you it might be something else. Dairy is a likely culprit if you eat it. If you can't pin down any probable causes, I'd go strict Paleo (not "moderately Paleo," whatever that means) for several weeks, and see if that helps. If yes, start adding stuff back in and notice what causes problems. If no, try eliminating other foods that many people have trouble with (raw veggies?)

Sometimes, even something as simple as a large quantity of food (duh) can cause that. If that's not the culprit, try eliminating goitrogens and FODMAPs for a couple weeks and see if that makes a difference.

Soy sauce has gluten in it as well, the same protein that makes wheat toxic. After eating mostly paleo your body might be more sensitive to it and have a poor reaction. I know when I get a dose of gluten I bloat so much that we joke about me having a wheat baby.

This happens to me when I eat a lot of carbs or any wheat gluten. I literally look like I've gained 10 lbs in my stomach overnight!

Drop the ketchup and soy sauce.If you're eating that little, it may not feel like a big restriction. The sugar in the ketchup can cause bloating, certainly. Be really cautios with fruit for awhile for the same reason. While organic and grass-fed are ideals, you can still eat Paleo without adhering to that. I agree with Miked and JayJay, it's unlikely that you need to add something and more likely that you need to take something away.

You may be low in digestive enzymes and or HCL/Betaine (stomach acid)

This happened to me the other day. In probably a 24-hour span, after a 20-hour fast, I ate 3500 calories in protein, fast and starchy carbs. I definitely felt a little backed up for a day or two and still feeling it a bit today. None of the foods were different than normal, but the sheer volume got me I think.

This is happening to me right now. I think it might be because I need more carbs. And I think it will go away on its own. Although, it doesn't hurt unless I poke it really hard. And it's not gas. ...

i have the same problem as you, i went from a diet of cheerios, granola bars, cereal, tea with sugar, graham crackers, bananas, yogurt and fruit (thats essentially all i ate for years, and chocolate) to a paleo diet and ive always had IBS problems but it was far worse when i went paleo. on this diet i was super skinny. i was paleo for 10 months trying to solve my IBS but it just got worse, and instead of just having diarrhea when i had to go i was also being bloated 24.7 and gained 20 lbs. i was 5'8 and 120 lbs eating all grains/carbs/fruits/sugar before (i maybe ate 2 bites of steak twice a year on my fruit/grain/sugar/tea diet) to 5'8 and 140 lbs and constantly bloating. now i am so uncomfortable in my own skin and i am beginning to hate my body and the decision to go paleo. i think it is a great template for eating better foods but when i cut carbs to 50-70g per day and ate a high fat diet all i did was gain weight and be bloated all of the time. i am trying to eat less fat now and more carbs and not be so strict because clearly i gave it a whole 10 months and i feel like i just destroyed my body instead. now i am sad and trying really hard to find a way to lose the weight i gained and to stop the bloating. i dont know how. i eat low calorie, sometimes less than 1000 per day, maybe 70-90g carbs. i used to run every day sometimes twice a day about 3miles each time and now since ive moved i find it hard to run in the city and also my job is 10 hour days in a call center so you can imagine how irritated my body is. i started doing yoga but i find it hard to get in the same amount of exercize i used to do with the long hours at my job and trying to run in the city sucks and is totally uninspiring (vs a beautiful trail i used to run..)

i dont know what to suggest for you, i would leave out the ketchup. ketchup makes me bloat instantly ..if im having a good day with no bloat and i even have a lick, thats it, im 5 months pregnant instantly...