Rachael. It is so difficult when they can't tell us - isn't it?

She might be behaving like that when she is eating because she is frustrated. Does she have a blocked nose at all? Or she may have a sore throat which is hurting whilst she feeds.
The altered bowel motions could very well be a results of her phlem. Little ones can find it difficult to cough it up and so usually swallow it. This can make them throw up (like my DD does) or it might be excreted in poo - often altering their bowel patterns.

If a cold goes longer than a week you should get it checked by the doctor to make sure it is just a cold. Especially if you are using stuff like Demazin or Panadol for symptomatic treatment.

HTH and I hope your little one feels better soon.

MG