10 month old baby has yellow watery poop. any idea why ?? please help

Keyla
Hello my 10 month old dautgher has been having yellow watery poop since yesterday and this morning she pooped a lot of it.
She was sick on Sunday with a fever but that went away on Monday night. 
Next thing you know Tuesday night she poops so much yellow watery poop it went down to her leg! I was shocked
 
And she did that the next day on  Wednesday two more times but on the second time she'd  little of  it , so I thought ok it's going away. Next thing you know this morning she does alot of yellow watery poop!! Any idea why she has this?? 
She eats well and I'm breastfeeding her normally. 
But she just started teething yesterday. I can see her little white tooth coming out. 
Maybe this has something to do with it?? I don't know 
Help 😭please