I have asthma hun,just take your ventolin as instructed,if you have becotide take that as instructed too,dont confuse the tightening of the chest with your asthma,people who dont have asthma sometimes experince the tight feelings in their chest post op,try not to panic sweetie, this will just aggravate the asthma,take a couple of deep breaths in through the noes out through the mouth,slowly this will help,any worries message me,xxx