I was the same for both my pregnancies. I threw up stomach acid immediately upon getting out of the bed... or within 5 minutes. Then I was continually nauseous every moment of the day/night. Mine lasted the entire pregnancy, until delivery.
I found that nibbling on snacks helped. And eating or drinking ANYthing with caffeine made it worse... soda, chocolate.. ANYthing with even the smallest amount of caffeine.. I swear I could TASTE the caffeine. (I never knew caffeine had a taste until I was pregnant, lol).
I got sick of gingerale and crackers..and to this day I still do not enjoy gingerale anymore. Banana Icees were my friend. They can be hard to come by, but you can find banana popsicles sometimes at the grocery store.
Also, check with your Doctor about Zofran. I didn't have that with my first, but with my 2nd pregnancy, it saved me. I went from not being able to sit up on the sofa the nausea was so overwhelming.. not being able to stand up long enough for a shower, etc.. to going out to a restaurant with my hubby for a nice big omelet breakfast! It is off-label use, so check into that if you are concerned about it. My daughter suffered no ill effects. In fact, she is considered gifted and to date is the healthiest person in our family.. no allergies, etc.
I managed to "self-wean" myself from the Zofran partway through my 2nd trimester... but I would have been hospitalized before we got there if I had not had it. Please talk to your doctor and ask about it. It does NOT make you sleepy like the other anti-emitics they will offer you. I could not lay around sleeping b/c of our son (who was 2 yrs at the time), so those other "options" were of no use to me.
oooh.. almost forgot... lemon drops. The mid-wife at my doc's office suggested them and they did help a little bit too. I didn't get any relief from lemon juice in water (spritzer type things you read about).. but the actual lemon drop candies did help some.
A friend of mine added Vitamin Water to her daily consumption instead of plain water and she said it helped her some. Vitamin Water comes in a lot of flavors, is naturally sweetened (no artificial junk) and has lots of B vitamins (hence the name, lol)... so maybe there is a connection with the B vitamins...