Hi Teresa, welcome! I do remember one of the experts mentioning that if a woman has lupus it's really hard to tell the difference between a lupus flare and the development of preeclampsia, so the symptoms are pretty darned close. And, as Catherine indicated, lupus/autoimmune disease leaves you more vulnerable to complicated pregnancies, including preeclampsia.
It's not likely that the protein you spilled in your pregnancies is influencing your health now, but more likely your overall health influenced getting preeclampsia and spilling protein.
I'm under the impression that developing full blown autoimmune disease is a process that can take time, even years, so perhaps when you first started having children, lupus wasn't as much an issue and then by the time you had your last two, you were developing full blown disease.
Lupus and PE from Ask the Experts:
Info on autoimmune disease from Anne:
Best wishes, and I'm glad you found us!
Allie 5-13-98 (35 weeks-pre-e)
Baby Camille 4-17-03 (36 weeks- htn and oligo)