Bright yellow sick in excl breastfed baby

[Artijoke]

DS is 11 weeks. He is sick a lot but its always that curdled white milky baby sick. This morning he did a big sick and it had lots of very bright yellow stuff in it. He seems happy and well but I'm slightly worried about the colour if the sick given he has drunk only breast milk. Has anyone got any ideas why it might be yellow?

Dd's used to be bright yelow if she sas phlegmy or snotty?

I thought of phlegm but he isn't snotty or congested.

It's happened again.

Could a Thai takeaway I ate last night cause this?

My son had this. It was bile. He had severe reflux. I would get him checked.

How are things op?

Ok thanks Citrusy. There were no more episodes of yellow sick so I have left it for now but if it happens again I will absolutely get him checked.

Thanks for everyone's advice.