Babybumblebee had some good information.
If she doesn't have a fever, you can probably rule out a UTI. My DD had a lot of trouble with bowel movements, and it took us a long time (about a year)to figure out that was her problem. She went thru a LOT of testing and doctors to diagnose her with Irritable Bowel Syndrome. We have to watch her diet closely, certain foods really set her off (popcorn, acidic juices, hot dogs, etc.). Maybe you could keep a food diary to see if there's any relation between what she eats and when she gets constipated.
Babybumblebee--please be aware that if your DD has more than 1 UTI there could be more to what's going on...possibly a kidney reflux (where the urine goes back up to the kidney from the bladder). I have a very good friend who's daughter had 5 UTIs before the age of 3 and her doctor NEVER looked into why she kept having them (her mother kept pleading with the urologist to send her to a nephrologist, but he wouldn't give the referral
jerk)...turns out her kidneys were infected and the antibiotics weren't strong enough to kill the infection, and she now has PERMANENT kidney damage. Her right kidney isn't functional, and her left is only partially functional. She can NEVER bear children now, because her partial kidney isn't strong enough to support a pregnancy.
My DD also had kidney reflux on both sides, the urine went back up TO the kidneys, but didn't go INTO the kidneys. Most girls/women who have kidney reflux go thru their whole lives never knowing they have it...it's totally painless, and it's only a problem if there are UTIs involved. If a girl doesn't outgrow kidney reflux by the time she's 8 or 9, they can surgically repair it. My DDs body has healed itself (thankfully). I don't mean to scare you...just want people to learn from our experiences! If you'd like to talk about it, feel free to PM me.
You are your child's best advocate...do your research, listen to your instincts, and demand the testing and referrals to specialists...
Sorry for hi-jacking this thread...