morning sickness is different for every woman.
mine lasted about 3 months and it was terrible.
I was usually sick the most around night time too. So i tried eating soups and freeze's to have something in my stomach, i took my prenatal vitamin around the evening time too because i found any earlier made me sick.
you could try drink gatorade, i've heard it helps with it a little bit, and although yes it is a sports drink, its keeping something down in your tummy and may make you feel a little better or help then sickness.
Since you cant finish everythng on your plate, try eating waht you can, let your stomach settle, and nibble at your food here and there.
I dont know if watermelon would help, it is a watery fruit and good for you..you could try that.
Maybe some unsalted crackers, my fiancee bought me those and i lived off them for a while! Banana's too, their good for you and you could try eating some to help, i dont know if it does anything.
They say the first pregnancies are the toughest, then it gets easier with the 2nd and so on. So it really depends.
Try going for walks, staying active, fresh air helps.
I go for walks with my fiancee, we sometimes go to the mall and walk around or go out for a stroll.