Answer
(Fatwa: 1380/1383/M=1433)
Yes, when you admit that you gave three talaqs to your wife on phone then all the three talaqs took place on your wife without any doubt and you both became haram for each other. A pregnant woman will remain in iddah until she gives birth i.e. the iddah shall be over at childbirth. The maintenance of iddah period shall be levied on you and the woman shall have the right to nourish the child. The right of custody shall go to the mother in case of boy up to seven years and in case of girl up to nine years and you will have to pay the expenses of this period. After this period is over you can take the boy or girl into your custody.
Allah (Subhana Wa Ta’ala) knows Best
Darul Ifta,
Darul Uloom Deoband