Sayyed Mohammad Al-Musawi, Sayyed Mohammad al-Musawi is originally from Iraq and heads up the World Ahlul Bayt Islamic League in London. Other than being involved in various humanitarian projects, he frequently responds to... Answered 3 years ago

No, she can not. 

If a pregnant woman is divorced or her Mut'a marriage has finished or terminated, her Iddah (waiting period) goes on till the end of her pregnancy. She will not be allowed to marry any one else before she delivers her baby.