Protein in urine/preeclampsia?!

Cassie

So today was my 37w checkup and doc said I had protein in my urine and wanted to me to do a 24hour urine test to make sure I don’t have preeclampsia.. my blood pressure was fine tho. So I was just wondering if anybody had preeclampsia without the high blood pressure? And if it’s not preeclampsia how could I have protein in my urine then?