Hi, my 14 yr old son has had asthma since he was a baby, he also has occasional episodes where the usual meds are not enough, and needs a 5 day course of steroids. In fact he just finished a course a couple of wks ago, and is much improved.
Buffalo gal is right, although worrying, the occasional short course should do no harm, and is better than the alternative of frequent severe attacks causing permanent lung damage.
You should soon see an improvement, take care, Mandy.