That's how I was, I ate lemon heads all day the candy to try to stop me from being upset, you'll get out of that stage, drink milk take your vitamin and drink water
Until a couple weeks from now, your baby is getting all the nourishment it needs from the sac and eventually bits from you stored. Talk to your doc if nothing works. Ginger ale might help or fresh ginger. Otherwise there are safe drugs like reglan and zofran.
Try peppermints to ease nausea
All i had for the first 14 weeks is ham sandvich about 5 times a day.... I was sick everyday but eating little and often you are more likely to keep some of it down. Now i am 21 week and i am making up for it lol :)
That early your baby is still able to take what it needs from you. Try eating small meals or snacks every couple hours instead of big meals. Sip water or drink gatorade/powerade to stay hydrated. Make sure to take your vitamin. You should be fine right now.