hi!
where I studied it was always possible to take a semester off because of health issues or similar. you also didn't have to pay then and could just start where you stopped one semester later. could you call somebody like a secretary or some counselor in your university and explain the situation to them and ask if you could take a break? maybe there is a possibility like that at your place, too and you just have to inform them.
I think there should generally be some official way to deal with an extended period of illness.