My 4 month old has been getting Tylenol at least once a day for the last two weeks because she's cutting 4 teeth at once. It's been causing her to lose sleep.

Well she hasn't pooped in those 2 weeks (her doctor said to try apple juice or pear juice and neither is working), as well as she started getting a rash a few days ago that keeps spreading. Almost looks like eczema, but it's spreading kinda fast. I plan on taking her to the doctor's but the earliest they have open is Monday. And suggestions till then?