HI Denise
Your body does all kinds of weird things when you're pregnant and this is probably just the body's way of counterbalancing some other need.
My tummy got really itchy as it grew and I got those little skintags you can sometimes get during pregnancy.
When is your next midwife check-up due? By now presumably you're having monthly ones?
If it's not for a couple of weeks, try a few days of moisturising your skin (try something simple like E45 cream or a good, organic cream from a special maternity range like deadseasource or Zita West), and try to make sure you're drinking lots of water so you're not dehydrated.
Some pregnant women get a bit chesty in dry weather or their nose gets blocked, and it could be that your skin is reacting to a respiratory discomfort. Nothing longterm serious, just a pregnancy reaction to hayfever etc. Some women get things like that even though they don't usually suffer with hayfever, or have never had asthma before.
If you are still feeling bad into next week, maybe call your midwife and mention your concern about liver performance. I'm sure you are going to be fine, but there are lots of simple blood tests that can be done during pregnancy, just to make sure you're on the right track.
Laura (editor) x