17 week old choked while breastfeeding. coughed/ gagged & couldnt breathe 4 a minute. now ok. could this cause dry drowning or brain damage?

See Physician: The baby should be seen and evaluated in the acute care setting. If the baby is still having trouble breathing, please call 911. For follow up pulmonary care, a virtual consultation may be useful to you and your physician.

Doubt it: Infants that age have a hyper-reactive gag reflex that will prevent the feed from entering their airway. During the process they hold their breath & often turn blue but then relax, resume regular breathing & color & act as if nothing happened. It is a natural protective mechanism that does not result in what you list. A visit today to your doc or urgent care can confirm things are okay.