Is it permissible for me to take my wife back after I divorced her three separate times, knowing that I lose control when I'm angry, and that she was menstruating during the first divorce, and she is now four months pregnant, and is she considered to have been irrevocably divorced from me?

Anger does not prevent the occurrence of divorce as long as it does not lead a person to a state of unconsciousness. If the anger is such that divorce occurs with it, then the wife has been divorced three times, and it is not lawful for him to marry her until she marries another husband, and he is not a temporary husband (muhallil), because divorce during menstruation is forbidden but valid.