I'm not sure I'd be worrying about
Lupus Nephritis just yet, let's leave the diagnosing to the Dr.
Is it your GP, your GYN, or your Lupus Dr you will be seeing tomorrow? Whichever it is, make sure you tell them everything you mentioned above.
Sometimes I think our bodies just decide to "do something different" as far as urine goes. I went on a vacation a few weeks ago -- I was drinking a lot less water than at home, yet I had to pee every 10 minutes -- much more than when home! Not everything makes sense.
When you do have to urinate, if your urine is clear it's likely everything is fine. While you are waiting to talk to a Dr, make sure your water input is high enough. Try not to worry or get ahead of yourself, but do follow up.
Lynnwood, Lupus & Sjogren's Moderator, Dx: 2002DIAGNOSING LUPUS & HW's LUPUS 101
"Life is far too important to be taken seriously." - Oscar Wilde