frequent is a relative term. How frequent do you urinate? How much do you drink?
if your have burning sensation while urinating, maybe it urinary tract infection
If your glucose level is high, suspect diabetes.
If your glucose level is normal, but your urine is foamy all the times, check your kidney.
if your glucose is normal, urine is not foamy, check your thyroid.
But It could be because you simply drink a bit too much water, small, untrained bladder, some prostate problem or anything else. It could as well be benign.
One thing to be sure, whatever you're having, drink enough pure water (not too much) and live a healthy life. Excercise daily and take a moderate amount of supplements. And do some detox once in a while.
have you been checked for diabetes?