I have found the same , just when you think you are on the mend somthing else starts to niggle.
but it is the muscles still settling and i’m sure that they dont all settle at once together its like its a little sequence of event LOL.
but i had what i thought was a little set back where all the stiffnes returned in the mornings for two or three days then ive felt great again.
so dont worry , ITS ALL GOOD !!!!! XXXX