Welcome to the White Smoke Organization, as long a the coolant level remains constant, not too worry, we all have this phenomenon.
It is white smoke when you start the car in cold weather, it comes from the exhaust.
And it can be white smoke from the aircon/heater under certain conditions.
I had this once in an airplane when they started the aircon while still at the terminal. Some people pannicked, others just relaxed and said that is normal. I am not an aircon expert, but as far as I understand that happens when very hot and very humid air hits a cold radiator =temperature differences along with high humidity.
Very seldom, everything must fit for this phenomem.