Prepare yourself - a poosplosion is looming!!! It's awful to see them in pain but she is probably just preparing to let loose!! DD had a few bad moments like that around the same age and we found the following helped:

- extra breastfeeds
- warm bath
- cycling her legs
- Brauers Colic Relief - this helped a lot on several occassion, especially when she started on solids. It's homeopathic so all natural

I hope your LO does a poo soon!