(Not sure which category this goes in!)

I started potty training this morning. I thought j would give it a go this week since Sadie has shown signs that she's ready, and has peed on the potty a handful of times.

She hasn't peed on the potty at all today. She has had 4 per accidents, and one poop. After she pooped in her underwear she ran to the potty and asked to go, so I think she is trying to understand. The part that concerns me is that every time she pees in her underwear she cries hysterically. I think it's a mixture of being uncomfortable and fear of upsetting me (she is very sensitive!). Is that normal or a sign that maybe she's not ready?