Help with 4 year old demanding water constantly.

This started around Thanksgiving. Our daughter (only child, just turned four) was diagnosed with the flu, had a nasty fever for a couple days, and we encouraged her to drink plenty of fluids while she was sick. I only mention the flu thing because that's when our current issue started.Since then, our daughter basically wants to be drinking something constantly. She's fine with water. Of course, drinking plenty of water is a good thing, but we're talking about somewhat frequent accidents at school (had been doing great for months before Thanksgiving) and wetting the bed nightly (again, had been basically night time potty trained for months until Thanksgiving) and pretty severe (for her) tantrums when we cut her off.She has been to the doctor to confirm that she's not diabetic (urinalysis and based on her lack of weight loss and normal appetite and behavior). Her doctor felt pretty strongly this is a behavioral issue, not medical.Again, drinking water is great. I know some parents that have trouble getting their kids to drink enough. But I'm talking about a four year old that remains almost fixated on drinking. Some of the things she's done related to this:Throwing her cup at a teacher when the teacher told her no more waterAsking for food so that she can get water (we made a rule that we're only going to be drinking during meal/snack time)Fits when she asks for more water and we deny itSneaking water (filling her cup at the refrigerator and hiding it; discovered just a few nights ago, drinking bathtub water while we let her play during bath time; drinking from her sink faucet; drinking from our glasses when we're not looking)Frequent accidents and having to find her a potty constantly (traveling/errands has become a nightmare)Is this just a behavior thing and we parents need to hunker down and put our big boy parenting pants on, and continue to be consistent and fair with discipline (following rules)? Is this a phase that we need to let run its course? Is there further medical testing/consulting that should be done?She's a very loving kid and she's smart and strong-willed. I honestly don't care about the amount she drinks, as long as there's nothing to be concerned about medically. We can deal with bed wetting. It's just that it's kind of a drastic, sudden change, and it seems to be linked to behavioral issues. via /r/Parenting https://ift.tt/2EIRm3Q