Do I have a case if my OBGYN never checked my urine and I ended up having an emergency C-section because of preeclampsia?

I am so sorry.  The best thing for you to do is to discuss the matter with an attorney in your area.  The consultation should be free.  Were there any complications to you or to the baby because of the situation?  Was the baby delivered pre maturely?  Please seek help.  More information is needed.  Good luck.