Possible uti in 3 week old baby but has cough -part of it?

[mummytopebs]

DD has been a bit off her feeds and has been vomiting after her feeds. My main concern is her breathing she is breathing fine through her nose but when crying etc and breathing through her mouth she can cry out but when trying to breath in she gasps and coughs and her chest rattles. Been to day unit at hospital who said her chest is clear (it is apart from when she crying), did a urine and it was abnormal so said possible uti. She has a temp to.

Has anyone elses dc had a cough, breathing difficulties from a uti??? or are they missing something

And also they said to go back if temp goes up, what shall i let it go to before taking her back?