Rach, that must have been scary the ribs hurting could be from the extra work you were putting into breathing {you know better than that} ALWAYS take your mestinon, YOU know your body and know when you need a boost. Don't let the Dr's make you feel you are wrong, YOU are right as you know yourself. Dr's always seem to try to make us feel dumb when in fact it is they that don't know what is going on. Always trust yourself!