I agree with everyone else, in the first trimester it's all about survival! It's so hard to even think about food when you feel sick all the time. Eat whatever you can manage, and try not to worry too much about nutrition for now.
Mine kicked in a few days ago, too. It comes and goes all day. I feel better for a while after I eat, but it's hard to get the food down. Most food and smells are revolting. I've been sipping sparkling water mixed with grapefruit juice or lemonade, and that seems to help a bit. Bought some ginger tea today and will give that a try. Laying down sometimes helps, but I spend my days chasing after a toddler, so it's not always an option.
I take extremely hot showers and have been thinking I should probably stop....sigh. I also really miss coffee, mostly for the ritual of making and sipping it in the morning. I just bought some decaf and am going to give that a try.
I'm just over five weeks and starting to feel queasy some of the time, in an I-need-to-eat-right-now sort of way. This is new for me. With my daughter, I was so nauseous that I basically couldn't eat at all (I gagged on everything I put in my mouth--only vomited once, but lost 15 lbs). It was awful. The thought of being that sick again is scary. I don't know how I'd manage it chasing a toddler around all day. We'll see what happens.