Lower ureter 7. 1mm stone. Comes out?

Hi, Last 2 days I had lower back & abdomen pain. Hence I visited urologist and get CT KUB scanned. In the report found that 'Mild right hydroureterenophrosis with ureteric calculus'. Size of stone is 7.1x5.6x3.8 mm. Doctor prescribed K-CIT syrup, oxalo & diclofenac tablets. Also I took injection 'Dynapar 75mg IM' twice(mrng & night) yesterday to control pain. Today I didn't face much pain. Can I consider this means stone entered bladder, if there is no pain? Doctor said that there is chances of falling out, if not then we need to take it out. Could you please suggest, based on the size and location. Is there any need of surgery or it can be dissolved with medicines. I am afraid of surgery. What foods are preferred to dissolve stone on its own and fall out? What precautions need to be taken until stone comes out? Thanks & Regards