I'm 37 weeks and have had gallstone pain daily since about 28 weeks (I think? I get the dates mixed up).
My attacks didn't stop with dietary changes, I was getting them daily or even twice daily for a while, but some foods definitely increased the number of attacks I had and made me feel generally sicker.
- Try cutting out the chicken breast, chicken breast -definitely- made the attacks worse for me.
- Avoid eggs like the plague.
- If you haven't already, stop eating any dairy products other than skim milk and no-fat yoghurt (I know, taste sensations, right?). No low fat cheese is low fat enough.
- Sometimes tuna in springwater seemed to be ok, sometimes it didn't... so you could try that
- Don't eat nuts
- If you eat crackers, try vitaweet - they taste a bit like cardboard but they won't set you off. Pretty much any other cracker will.
- Highland Oatmeal biscuits seem to be low enough fat that you can have one or two a day (though I wouldn't have more than that at one time). They do taste a bit like sweet drink coasters, but at least you can feel a bit normal and have a biscuit with your hot drink.
- Be careful about still getting protein in your diet when you cut out the chicken. You can 10g protein from a cup of skim milk (which doesn't taste as bad if you heat it up) and there's a fair bit in the no-fat yoghurt (Paul's and Mundella are the brands I found that make reaaallly low fat yoghurt that doesn't have artificial sweeteners, but there are quite a few artificially sweetened ones if you don't mind that). You can also get a good amount of protein from lentils and baked beans. If you make soup, drop half a cup of lentils into it and they cook in about 20 minutes, they cook down to nothing, just thickening the soup. The dietitian I saw got me to start drinking sustagen 3 times a day, it has protein in it too and is very low fat so shouldn't set you off. Also, it makes the skim milk taste a whole lot better.
Are you in the public system? If so, ask to see a dietitian. There should be a couple attached to the midwife unit, they're there to help people with diabetes but they are also available to help people like you with gallstones. Be aware that they may suggest you try foods that are higher in fat that you think is safe (nuts for example), don't try it if you're not comfortable, I did and it made me feel a whole lot worse. Trust your own judgement.
The dietitian may not be a whole lot of use, but may recommend some other foods for you to try. I had the increased difficulty of gestational diabetes, so I couldn't eat as many carbs as I wanted to, but if you don't have that limitation, at least you'll be able to have variety in your carb intake and you won't lose weight because you can fill up on fruit, dried fruit, vegetables, bread, rice and potatoes, which definitely won't make you sicker.
I also had weight loss (3kg in 3 weeks)and that's the point where things started being taken more seriously by my obs. I haven't gained back those 3 kg, I've stabilised my weight and maybe gained half a kilo, but nobody seems worried now the weight loss has stopped. You may find you end up in a similar situation. They check regularly that my baby is growing well (you may need an additional ultrasound), and told me that while I was losing weight, my baby wasn't, he was leeching all the goodness from what I was eating.
It's hard to eat when you're feeling so wretched, but if you can at least stabilise your weight you will feel better for it. I think the sustagen drinks really helped with that for me, it's easier to drink than eat when you're feeling awful. Also, I ended up writing myself a daily meal plan and my DH checks at night that I've eaten everything on it. You may need similar help.
To give you a little bit of hope, about four days ago my stomach 'dropped' and I have only had one attack since, the longest attack-free time I've had since they started. I think that now my gallbladder isn't quite as squashed and isn't kicked as often. I have my fingers tightly crossed that it stays that way.
Also, I know what you mean about the way mw/obs treat you when you talk about the pain - it's hurts like you're going to die, but some of them treat you like you're whingeing about a stubbed toe. Have they given you panadeine forte? It won't stop the pain, but if you take it as soon as an attack begins, you get some relief before it's over. Don't let them make you feel bad for complaining, you need to take care of yourself in order to take care of the baby inside you - and you're still important in your own right!
Hang in there.