Every single pregnancy is different. You might find, since you got it sooner this time, that it eases sooner. Then again, it could last for a while. If it doesn't ease up, I would maybe see your doctor and see if they can give you something to ease the sickness.
What have you tried so far? Ginger is supposed to be really good. I hate ginger, though, so when I was pregnant all I could manage was to drink ginger and lime.