Has anyone been diagnosed with preeclampsia without the typical bp over 140/80?

My blood pressure is stupid low like 80/50s rarely but usually 90s-low 100s/60s but I have EXTREME swelling in my ankles and feet (with pitting) and I drink 80-100oz of water just at work. I haven't called my dr yet (he has been out of the office). I have had light headed spells. And I'm outside for 5-6min max a day so the edema is not from the heat. Haven't had my urine checked for protein as my dr is out and back tomorrow.

Lower back pain is ridiculous. But could be due to my tailbone being popped out of place (typical thing)

Sorry for the book and added unnecessary details haha