Oatmeal cereal and no poop in 4 days

Jo

I started giving my almost 6 months daughter oatmeal cereal once per day ( not much, mixed with breast milk) but now she hasn’t pooped in 4 days. She lets out very stinky gas and is peeing okay. 6 months wellness check is in two weeks.

Should I stop with the cereal and should I be concerned? She generally seems okay but you can see she is struggling to poop or attempting but not working.