Booking bloods

Today I had an appointment with the midwife (now 17 weeks 4 days) and she told me my booking bloods showed slightly raised alt liver enzymes of 46 and low platelet count. I'm so worried now as my first pregnancy I had these problems later on at 34 weeks and had acute fatty liver of pregnancy, and my second pregnancy the same at 34 weeks but it was pre-eclampsia both babies were born at 34 weeks also but very healthy :). I'm worried things r happening quicker this time :(. Really hope when I have my bloods done on Friday things will be better not worse