My baby seems to have a lot of secretion when he breathes. He doesn't have a runny nose, but when he breathes it's like a purr.

Hello, does he regurgitate, have diarrhea, fever? Is the purring often after breastfeeding? Are there any other symptoms?

When he breathes, you feel a vacuum, can you describe the secretions please?

in this situation, it is necessary to hydrate the baby (water) and to watch his breathing, if you feel that he is breathless or that there is a vacuum in his breathing, especially when he sleeps, or if there is an appearance of fever that does not resolve itself in 48 hours, you must go to the doctor. It is strictly important to wash the nose with a saline solution and to suck with a nasal aspirator because the baby does not have the strength to blow his nose and it also avoids that the secretions clog the lungs. As for the pimples, I don't think there is any relation with the change of milk because intolerance to milk is mostly manifested by digestive symptoms such as vomiting, diarrhea or constipation, bloating.

It's better to give him boiled water, you can give him as much as he wants, for example after his feeding, you can put 50ml of water in a bottle and give him everything he will take, it will help him. Also there is vervain in leaf, you can put a leaf in warm water, it helps digestion, it also calms

No herbal teas yes but in leaves in hypermarkets like Maxi.....

Welcome to the site.

With pleasure!