infant bronchiolitis and constipation

My 6 week old son developed Bronchiolitis a week ago. I thought it was croup and reflux, but today was advised that it is Bronchiolitis. He caught a cold from his sister (almost 3 years old, has had a thick runny nose for 6 weeks now), when he was 2 weeks old which was just a snotty nose and some sneezing. He had no trouble nursing, was gaining weight well, and the morning before the Bronchiolitis started his chest was clear. That night he threw up a great deal and immediately had a single phlemmy cough after. He woke at night (as usual) with gas pains trying to pass gas or stool. He has finally pooped the afternoon before after an uncomfortable 36 hours. Day 2 he had the same cough but 3 at a time, he pooped 3 times (after 34 hours without) but was still up gassy that night. Day 3 the cough got worse and sounded like croup, he threw up and spit up (never had spit up b4) and did not poop. Day 4 he lost his voice and cried without sound, he pooped at 2pm. I gave him hepar (1/2 tsp of 3 - 30C pills in cooled boiled water) I saw no effect, and tried aconitum in the same fashion, and gave him a steam bath that night. He was nursing less often and for much less time. He slept more than usual. Day 5 I repeated the aconitum (I used from the same glass made the day before for this dose and all subsequent. Is this effective, or should I be mixing a new dose?) he threw up that day and in the evening passed a darker brownish stool. His pees were darker too. He was nursing for less time, less frequently again, and sleeping more. That night was aweful. He went 8.5 hours without peeing, and 8 hours without nursing. I tried every 2 hours with no success. He threw up once and spit up several times from coughing. No stool. Day 6 voice returned to some degree. Coughing fits with 7 coughs, face turning red then purple at end of fits. no stool. Very gassy (as usual), and uncomfortable, waking often, from gas and coughing. Today, day 7, gave 4th dose of aconitum water. many coughing fits but sounds a little less phlemy. no stool. very gassy. spit up from coughing once.
He has never had a fever, and his chest still sounds clear. He has now gone 3 days without stool. He is happiest when he stools 3 times a day. He is peeing often, nursing more often and for a bit longer, and looks more hydrated. I am going to take 2 Pulsatilla 30 C myself now. And am tempted to try a 1/2 tsp of Nat Phos water for his constipation/reflux in the morning. Does this sound appropriate. What should he take for the Bronchiolitis? Cal Carb? (note- my grandfather had a serious allergy to sulphur tablets. His daughter died from taking one when she was 7. I have always avoided anything with sulphur in the name for me or my children - I'm not sure if this is necessary). Any help would be greatly appreciated. Thank you!