Don't sweat it maba... I don't know if you remember my rants during the beginning of mine, but I was having aversions to nearly everything - all meat seemed like a bad plan, so I ate eggs... then eggs made me gag (and I still can't eat them). Salad was not appealing, nor were cooked veggies, so I was pretty limited to carrot sticks, celery, raw broccoli, and cucumbers as far as veggies go...
White rice has the germ removed, so it has fewer anti-nutrients than brown. Of course, it's still basically void of any nutrition on its own, which is why I cooked it in chicken stock and loaded it up with butter (vitamins + a little protein from the stock, tons of fat from the butter).
I also felt a little better about things, knowing that at least I was taking my prenatal vitamin (which I don't like "relying on" but ... there it is).
This is NOT a lack of willpower. Take a second look at that if you start saying things like "All the baby wants is cheetos!!!" ... but if you are eating real foods and doing as well as you can, that's as good as it can get right now.
This is definitely hormonal / physiological. Don't worry about it. It WILL pass.
I'm 17 weeks today and just in the last week and a half or two have started feeling "more human" and being excited about salad, meat, and veggies again (though don't show me a pork chop or a pork tenderloin, and eggs are still iffy).
During the first trimester, the baby can get most of what it needs from your body (don't worry - baby is NOT shy about stealing from you) and nature has created food aversions so that we don't accidentally poison ourselves and harm the baby during that period. Once the baby can make its own hormones (its blood supply is separate from yours so it doesn't totally mingle) you will feel a lot better and be able to eat more nutrient dense foods.
If you want to do what I did, just try to make sure to get in "enough" calories each day - I had to try hard to get 1000 some days - and get in a lot of fat any way you can (butter everywhere, man... ghee would rock).