so when my daughter got out of the tub last night it would not drain (it was empty this morning)also when we were done brushing teeth last night and this morning water was not draining from sink? any ideas why?
Its definitely not further down the line. If it were a mainline stoppage all fixtures would be plugged and you would have sewage in your tub or shower because it the lowest point. Dont buy draino first. Try taking the pop up drain plug out and remove any hair or debris thats collected. You can also try a plunger which works best when you plug the overflow hole with your finger or wet rag. Its usually hair caught on the bar that moves the stopper up and down.
If both drains are clogged I would think that the plumbing vent is blocked.
Possible clog where the two sets of pipes intersect or down the line. Maybe try some Liquid Plumbr, I have used it before and it did the trick! If that doesn't work call a professional
It sounds like the main branch that connects the two drains together may have a obstruction! More than likely it may be hair in the bathtub drain, and the sink. Try this: Fill up a large pan of water and put it on the stove, now heat that up to a boiling point. While that is heating up, go into bathroom and remove stopper from tub drain (if possible) and see if the drain is just clogged with hair. If it is, then use needle nose pliers or a hook of some sort to pull all of it out. That should do the job. Then continue with the step below. If you cannot get the stopper off or there's no visible obstruction, then continue to te next step.. Just make sure that both sink stopper are up and no visible obstruction is in the way. Next, carefully take the pan of boiling water and dump it right down the tub drain...let it sit for a couple minutes. Then next put a wet hand rag into the overflow (right above drain in tub) to cover up the opening so no air goes through the overflow for the next step. Now use a plunger and gently start plunging the water down. The trick to plunging is not to force the air down, but the suction up is where it works best! Pulling it up hard, and then gently pushing back down repeatably works well. If after 5 minutes no luck..wait until water goes down all the way, and then repeat the boiling water and plunging 2-3 times and that should do it. Let me know if that works for you.