I only know of one other person on here that has CF to. But I don't know if theres more. So I guess I'll make this topic and hope more see this sooner or later.
My friend had CF, he had similar issues to what you are describing once his CF started to progress. Not that yours is, everyone is different and it could be caused by your medicine.
Your best bet is to ask your specialist.
i do wen i work out lol every weekend
:P
silly but no cf