Can pregnant wife ask for divorce?
If a woman thinks that she can not live with her husband any more then she may request him to divorce her. This request can be made any time even while she is pregnant. However, if a woman was divorced when she was pregnant then her Iddah period will not be over until she has given birth to the baby. So, the pregnancy may shorten the Iddah and it may also prolong the Iddah depending on how far the woman has reached in her pregnancy.
And Allah knows best.
Mufti Ikram ul Haq
Fatwa Center of America