Usually a normal phenomenon at this age but URINALYSIS test is required.

Dear friend  I really do understand the concern u have about ur little one .Usually children do cry before passing urine and stools like letting know the parents that I am going to pass stool or urine . Though if u feel the frequency has increased or change in colour of urine or even the smell of urine pls get an URINE ROUTINE  test done on the child's urine sample.To collect the urine u can use a condom catheter which is available in the medical shops . Please let know of reports Thanking you Dr Sujit