Protein in urine 34 weeks pregnant Saturday

I posted early about sudden swelling in feet

(Feet and legs indent if you lay a finger on them)

I called the OB and they wanted me to come in they checked my blood pressure which was 123/92 and said I had traces of protein in my urine. They want me to do a 24 hour urine collection and bloodwork but can’t do so until Monday due to them being closed tomorrow. Has anyone had an experience like this with the swelling feet and protein in urine and not had preeclampsia or anything serious? Just makes me a little nervous.