liver problem in pregnancy ?

Rose • Hiiiii
If I suspect I may have the pregnancy related liver problem how soon should i get tested ? I'm probably being paranoid but this last few days I've felt awful , I've been really sleepy and nauseous, my skin looks a bit yellow and my legs are so itchy ... I've read that these can be signs of a liver problem but it doesn't say how soon to get tested I'm 26 weeks x