There could be two reasons for your not feeling any feeling for passong urine.
,may be due to diarrhea
or vomiting or less consumtion of water
2... Urinary tract
infection( UTI )
However,in the present context,since you are not having any pain or burning,the chances of UTI appear less.
I advise you to take plenty of water orally and soon you shall be able to pass urine.
Once you get urine,get a urinalysis