Should I take my daughter to the dr?

The last 3 days my daughter( she’s 2 or 28 months) has had basically poop that is water.. it’s very liquidity and blow outs everytimr she poops running down her legs

She still is eating a normal diet and we haven’t changed anything in her diet either or introduced anything new she’s been eating what she normally eats on a day to day basis

I’m trying to figure out what is causing this I thought at first her tummy was upset at something but it’s going on for 3 days now and I’m wondering if I should take her to her dr or let it pass