7 mth old been prescribed amoxicillin for a bad chesty cough. Both times I have given it to him today has been at a mealtime & he has then proceeded to vomit all his food about 15mins later. He has been sick occasionally in the night after coughing a lot but is not a sicky baby so it is very unusual for him to suddenly gag & vomit while eating. Is is a reaction to the antibiotics & should I contact the dr? Or is it just a normal side effect? I doubt he's actually absorbed any of the antibiotics so far!