Hi Pandalady38 and thanks for your post on this very interesting inquiry.
I'm understanding this to mean you were asked (by someone else) if YOU would be alright after you've told that person that you had severe COPD.
If that's the case, you may want to say something like - you're being treated by a professional physician who is doing everything he can for you. Your medication, your oxygen, your treatment plan is all designed to help you cope and live with COPD. You sometimes have days that are better than others, but you believe you will live as best as you can and do as much as you are able.
Others may come by with other suggestions.
This is one type of narrative you may want to use. Or, you may want to add to it and make it more from yourself.
Please let us hear from you as to how you feel about these replies to your concern. We can help you through should you want to discuss even further.
Warmly,
Leon (site moderator)