Seeing spots? Help?

Lately I've been seeing colored spots and blurring during night time. Just wondering if anyone else has had this happen to them? I'm 32 weeks pregnant but the weird thing is it's only from one eye, I've been to the er because I thought it was high blood pressure (i've had preclampsia last two pregnancies) and they didn't let me know anything other than it wasn't preclampsia. Anyone else have any other suggestions?