Health question

Ok soo I'm 17 an since 5th grade my doctors say I have kidney stones it happens couple times a year pain in my right side, vomiting a lot an fever but.. I've never once passed a stone. Last time I had a episode it was last MAY I went to the abc clinic in town an they said I had a kidney stone then a day later they call my mom an say I have a stone an Ecoli yet I didn't have any symptoms of ecoli. Well since this last Friday I've been throwing up alll the time. An having pain on my right side an a low degree fever. I couldn't keep anythin down I had a plain ice snow cone an even that came up well I went to urgent care thinking maybe a better doctor they are saying I have a uti but I don't have any problems with my bladder they said they found a lot of bacteria an gave me Nitrofurantoin for a antibiotic and Ondansetron for nausea Which tastes disgusting but anyway I looked up the symptoms for uti an I don't have bladder issues but it said nothing about uti causing nausea. Idk if they doctors or wrong or what I have pain on my right lower side back right above the waist I guess an I've been throwing up everything. An having low degree fevers. My mom thinks it's kidney stone but I've never once passed any. An dad thinks it's gall bladder problems idk y an the doctor says it's a uti? Any suggestions??