I am not sure what your train of thought is, but if you are taking kratom most days, you are getting, if not high, at least affected, most days this week. You sound like you are "bargaining" and addicted. I hope I am wrong.
Generally opioids suppress at least some measurable immune responses, which might be good or bad thing, depending on things doctor could probably explain better. But there is a chance the illness drags a bit. There is also chance that effect is not remarkable in many reference frames.
I definitely miss it on days I don't take it. However I would say that my addiction to coffee is worse. My dosage has been pretty consistent for a long time. I think as long as I only take Kratom, in moderate dosages, and don't use opioids regularly I will be fine. It has been a week since I have taken any kind of opiod.
I won't take any tomorrow as I am going out dancing with he wife and will take a little Ecstasy.