צום בתשעה באב לחולי קורונה ולנמצאים בבידוד – בירור בנוגע לתשובה

Dear Rabbi Dr Halperin Following our telephone conversation yesterday this is our email address. I am very grateful for your assistance.

I have previously been advised that attendances to medical conferences on shabbos are permitted and even desirable as long as no melocho is performed. Is

Why is the length of the Nidah different after giving birth to a boy or a girl?