I've had two pregnancies and had all day nausea with both from 6 weeks and lasting until 14ish weeks. It improved the closer I got to 12 weeks.
I didn't successfully find anything that cleared nausea completely.
The things that helped were
Dry biscuits (rich tea or digestives)
Bread sticks
Plain pasta
Having cereal and a drink in bed first thing
Napping
Drinking!!! I remember even drinks not appealing too Me. But it's so important you stay hydrated. ..
Try water
Squash
Tea (preferably decaf but I had caffeine ones)
Fizzy water
Juice
One thing that worked for me was pasta salad made up in the fridge. I'd nibble a few pieces.
Basically for me being hungry made it a million times worse. Grazing throughout the day made it bearable.
Dry cereal
Crackers
Readybrek
Anything you feel you can stomach.
You can try mint, ginger candies etc. But personally I didn't notice much difference.
I tried a roll on anti nausea thing. I'm sure that did nothing for me too!
Ice poles and lollies were very refreshing.
This will pass. I remember feeling abit down in the dumps around 7-10 weeks.
Just rest as much as you can too.
Massive congratulations. I really miss the exciting journey to motherhood.