Divorcing a pregnant woman
Q:
1. A brother divorced his wife once, a talaq baain, then performed a new nikah. After that he divorced her as follows:
I hereby formally issue one talaaq baain to ..., on 28/03/1439 (17/12/2017) at 15:22 pm. I also make ta’leeq of another talaaq baain which falls on 28/04/1439, exactly one lunar month from now, thereby completing 3 talaaqs, according to what has been mentioned as the sunnah method of divorcing a pregnant woman. Is this the sunnah method of talaq for a pregnant woman.
2. Is it not repugnant to divorce a pregnant woman? Are there any ahadith for this?
3. After 3 divorces, does the son-in-law have to observe hijaab from his ex-mother in-law and is communication permissible?