Thanks for your question.
severe lower abdominal pain
may be due to appendicitis
or lower ureteric stones. as you need ultrasound
abdomen to rule out these two common diseases. once it is confirmed that there are stones in the ureter of sze less than 8mm ,usually do not require any special treatment except pain killer and taking lots of fluids and somes antispasmodic drugs like dicyclomine
. stones more than 8mm requires intervention. so better not to take pain killer for prolonged period.