My morning sickness was so bad this pregnancy, I tried a million things that people suggested before I had to go on zofran since I couldn't even keep water down. Some of them work on some days, some didn't. At 21 weeks I still get nauseous if I don't eat often.
Here is a list of the many suggestions I got that may or may not help ease through morning (all day) sickness)
Ginger, ginger ale (with real ginger)
Eating even before you get out of bed in the morning a light carb snack.
Eating every 2-3 hours, light mini-meals through out the day
Vitamin B6 tabs (unfortunately I could not keep the pills down)
Avoid citrus, especially at times you usually get sick or on an empty stomach
Avoid acidic foods, eat lots of alkaline foods.
Caffeine free cola
Sucking on peppermint
Avoid strong scents
Take your prenatal with food
Some of these tips helped, I used most of them from time to time and they did help a little bit. For some woman just doing some of these simple things can alleviate many symptoms of morning sickness. Hopefully if you do experience morning sickness it will not last into your second trimester like I am still dealing with.