Am I still my husband's wife if he took me back immediately after the second divorce, taking into account that he divorced me the first time then took me back with the knowledge of my guardian, and after a year he uttered the triple divorce under duress, then he and my brother took me back verbally?

First: Divorcing a pregnant woman is permissible and takes effect, whether the wife knew of her pregnancy at the time of divorce or after it. A triple divorce counts as a single divorce.

Second: If your husband takes you back after the second divorce, then you are his wife, and you must return to your home and improve your marital relations with him. He, too, must improve his marital relations with you.