I do if the outside gets too dry or I have too much sugar or wear tights. I used to get a lot of thrush but also discharge with that so I don't think for me it is that but might still be a good idea to check this out.
I use gynest cream externally and vagifem which keeps me comfortable unless I do any of the things mentioned.
Sorry, just realised this does not help you with your question. Yes, maybe get it checked if it carries on.