kidney stones ??

taylor
I've been having excruciating back pain.. I have history of kidney infections and UTI's. so today at my regular appt they did a urinalysis and said there is blood in my urine but no signs of infection.. they ordered an ultra sound for my kidneys to see if I have kidney stones .. has anyone else gone through this ? I'm also have light period like cramps but at times they're very consistent.. the back pain is AWFUL! someone give me some insight and if you've had something similar... with that being said- my dr said if it isn't kidney stones then he's going to chalk it up to just pregnancy pain..... would pregnancy pain make me have blood in my urine ? HELP!