I have it too. it's the kidneys not working 100%. they don't worry about it unless you get high amounts if proteins. it is a sign of preclampsia, so they will keep an eye on your blood pressure. I got it around 33 wks.
It could, but it has something to do with high blood pressure. But if the doctor has mentioned it, I would call and speak to them, cause it may not even be preeclampsia. But if it is, you will be monitored more. And probably put on high risk.