Your entire lifestyle is changing, your life pretty much will start revolving around this little human and it’s okay to feel overwhelmed. Pretty sure most mummies go thru this stage too, it will pass by you even realize!
Go ahead and take a quick hot shower, it is also okay to wash your hair as long as your dry it immediately. From my understanding, the reason why people don’t wash their hair back then is because they don’t have hair dryer (Olden days). Personal hygiene and your sanity are much more important.
Aircon is also okay, just face the wind upwards or away from you directly, just like in the hospital, there is aircon. It will be over soon, hang on tight mama! 😊