I eat what is called "sushi ginger". I actually like it.

Marijuana is the typical treatment for SEVERE nausea, and a non-psychodelic medication called Marinol, which is derived from marijuana, is also being used (it is very expensive). I do not know the legal medicinal marijuana situation in Sweden, but trying marijuana edibles to see if they help could be a good idea, if legally available.

Also, but this is probably just idiosyncratic, I ate apple sauce by the jar when suffering from morning sickness (nausea in the first trimester of pregnancy). I also ate rice pudding with a touch of cinnamon. Both helped.

Finally, eating tiny snacks frequently (whatever it is that you eat) would help.