Someone help please

Kerry • Hi I'm 34 on my 3rd pregnancy I have a 15yr old daughter and 11yr old son, quiet a big age gap lol, I also ave 2 stepkids they are 15 and 12
I'm 6wks 4days my 3rd pregnancy, been suffering with nausea since Monday on and off but today has been pretty bad had hardly anything to eat today as the thought of eating is making me worse which I know is making me feel worse by not eating, anyone got any tips plz as I know I need to eat many thanks