My 4 weeks baby cold as fall since then crying very night the stomach disturbing her what can I do and she as catarrh too.
Exclusive breastfeeding and keeping baby warm.Avoidance of smoke and people with cough and catarrh are what to do... No need for medications. If the child should develop breathing difficulties kindly take to see a Paediatrician
Dr Aina Johnson

Paediatrician

What you described is colic. it should resolve on its own without any treatment.
It usually starts a few weeks after birth and often improves by age 3 months. By ages 4 to 5 months, the majority of babies with colic have improved.
You may however give infacol for relief, but note that it does not work for every baby.
But should the pains become so severe, you should see a paediatrician.