Urethra having spams no pain when urinating but always feel the need to pee had bad pain in kidney last night have duel collective system in l kidney?

See physician : Dual collecting systems only have pain if there is a stone or infection. Urethral spasms can reflect local irritation during sex. The bad pain means you need to see your physician to be checked and to have a urinalysis done

Check the Urine: This is could be a sign of an UTI. With urinary tract anomalies, such as yours, it is important to get a urinalysis done and a culture if needed. There are other causes too, but those may need further investigation with a Urologist.