I am 15 weeks pregnant I woke up Tuesday morning with severe pain in my right flank to the point of not being able to walk, sit down or lie down without being uncomfortable. I went to the ER as instructed by my OB and they found small traces of blood in my urine and took blood and did a ultrasound of my kidneys and determined they saw no stones but the opening to my kidney was dilated a small amount and thu thought I mint have had a stone and passed it already. They gave me an IV and nubane and told me to take Tylenol if the pain persisted and come back if it got unbearable and took me out of work for 3 days. I m a manager in retail so I am on my feet the whole 8 hours I m working. I was fine after that with plenty of rest and staying off my feet. They had said it was swollen kidney with colic. I returned to work Friday and after 4 hours the pain got so intense as bad as it was the first time, I took Tylenol it didn t touch it and I was in tears because it hurt so badly. I finished out my work and returned tothe ER because the OB and my primary both told me there wasn t much they could do to ease the pain and since the ER instructed me to come back if I had pain that s what I have to do. I went in and went through the same things. Took urine sample this time no signs o infection or blood just a small amount of white blood cells. He touched my right flank and it hurt badly. The dr determined that this is pretty much a head scratcher and thinks it may be hydrophenosis not kidney stones. He sent me home with some vicodin and another 3 days off of work and a request to follow up with my OB and primary doctor. I guess I just want to know what this could be, how it could affect my health and what I am supposed to do from here because I m not getting any answers. I was fine all day yesterday but today I went grocery shopping and came home and my pain has returned. I m scared because I had a miscarriage last year and I don t want these kidney problems to prohibit my pregnancy or lead to kidney failure or rupture. I don t know what to do about work as I am on my feet all day and this tends to from what I ve experienced make the pain come back ten fold. I d appreciate any comments, opinions or replies on what this could be or what I should do so my baby and I can stay safe. I cannot keep going to the ER or downing vicodin whenever I have this pain return and I can t handle this being a head scratcher and not having answers.