its probably urinary tract infection
. Its advisable that the germ causing this infection should be identified and the antibiotic or drug that could be active to eliminate it known. This can only be through a urine culture and sensitivity tests that shall have to do. The pain you complain of in the right side when the bladder is full suggests hydronephrosis
. It s worthwhile you visit your physician for a proper evaluation to exclude of these. Remember disordered manner of talking anti biotics in the wrong doses or when inappropriate could lead to drug resistance
of the germ. This can cause infection to become chronic and spread to nearby noble organs like the kidney
While waiting to see your doctor for a proper evaluation, advisable to have protected sex, advise your partner also to get a proper examination and evaluation with the physician and drugs large amounts of water.
Best regards as I hope this helps,