17 month old hasnt peed since about 3 yesterday?

She sounds dehydrated. Give her plenty of liquids. She needs to be seen immediately.

Has she been drinking and eating regularly?

It is possible she could have a UTI or kidney infection.

I would call your primary care pediatrician to see if you could in asap

BM and urine are two separate tracts, a urinary tract infection is possible and the only way to check it is to see the doctor for an exam and some tests.

BM will excrete some H20.

Use your regular DOCTOR, PLEASE. ER is for emergencies. People should not use ER for a parental panic attack. We've done this. So I know how you feel. But calm down. and see your regular doctor. that said don't delay on calling your doctor.

I agree with Linda, asking medical advice on a web forum isn't really "what" anyone should do. Most here are parents who have been through it. We own a wing in our doctor's office after raising kids for 20 yrs.

Don't panic, but do make the call.

Look up kidney failure symptoms - there are lots of other symptoms that she would have if it was that. For all you know, you might have just missed a pee diaper somewhere along the way before you felt concerned and all is well. But better to be safe than sorry, so call a doctor immediately if only to make yourself feel better - I would!

List of Kidney Failure symptoms:

Acute:

hemorrhage

fever

rash

bloody diarrhea

severe vomiting

abdominal pain

no urine output or high urine output

history of recent infection

pale skin

history of taking certain medications

history of trauma

swelling of the tissues

inflammation of the eye

detectable abdominal mass

exposure to heavy metals or toxic solvents

Chronic:

poor appetite

vomiting

bone pain

headache

stunted growth

malaise

high urine output or no urine output

recurrent urinary tract infections

urinary incontinence

pale skin

bad breath

hearing deficit

detectable abdominal mass

tissue swelling

irritability

poor muscle tone

change in mental alertness

Kidney Infection Symptoms:

Back lower pain and also around abdomen area

Feel pain when urinating

Increased urinating frequency compared to normal day, except with little urine

Urine may contain blood and was in darker color or murky.

fever

smelly urine

nausea and throwing up

Fatigue

Diarrhea

"sometimes a child may have only a low-grade fever, experience nausea and vomiting, or just not seem healthy. The diaper urine may have an unusual smell. If your child has a high temperature and appears sick for more than a day without signs of a runny nose or other obvious cause for discomfort, he or she may need to be checked for a bladder infection. An older child with bladder irritation may complain of pain in the abdomen and pelvic area. Your child may urinate often. If the kidney is infected, your child may complain of pain under the side of the rib cage, called the flank, or low back pain. Crying or complaining that it hurts to urinate and producing only a few drops of urine at a time are other signs of urinary tract infection. Your child may have difficulty controlling the urine and may leak urine into clothing or bedsheets. The urine may smell unusual or look cloudy or red."

Dehydration Symptoms:

Sunken eyes

Decreased frequency of urination or dry diapers

Sunken soft spot on the front of the head in babies (called the fontanel)

No tears when the child cries

Dry or sticky mucous membranes (the lining of the mouth or tongue)

Lethargy (less than normal activity)

Irritability (more crying, fussiness with inconsolability)

Contact your doctor if your child has any of the following:

Dry mouth

Crying without tears

No urine output in four to six hours

Sunken eyes

Blood in the stool

Abdominal pain

Vomiting for more than 24 hours, or vomiting that is consistently green in color

Fever higher than 103°F

Less activity than usual

Urination much more than usual

Go to a hospital's Emergency Department in these situations:

If your child is lethargic (difficult to awaken)

If you cannot reach your doctor

If your child is complaining of severe abdominal pain

If your child's mouth looks dry

It's amazing what scary words people will throw out at you when simple research says that it's most likely none of those if she has no other symptoms.

Hi I would take her to my Gp this site is not for medical questions no one is qualified to advise you if in doubt call a GP all the time, better save than sorry

call the pediatrician immediately. it is not normal for kids not to pee for such long periods of time (i don't think its normal for anyone not to pee for such long periods of time). call pediatrician, explain the problem and ask then should I make an appt or take her to ER? simple

You need to take her to the dr. or call. Better to be safe.

CALL YOUR DOCTOR- OR TAKE HER TO ER!!!

Kidney failure can kill a child in less than 24 hours.