Can a pregnant woman perform Hajj?

1 – There is no reason why a pregnant woman should not
perform Hajj. A pregnant woman is taahir (pure), she has to pray and fast,
and if she is divorced by talaaq, her divorce is acceptable according to the
Sunnah. 

2 – indeed it is narrated in the Sunnah that Asma’ bint
‘Umays (may Allaah be pleased with her) went out for Hajj with the Prophet
(peace and blessings of Allaah be upon him) when she was pregnant and
approaching full term, and she gave birth at the meeqaat. 

It was narrated that ‘Aaishah (may Allaah be pleased with
her) said: “Asma’ bint Umays – the wife of Abu Bakr – gave birth to Muhammad
ibn Abi Bakr in Shajarah and the Messenger of Allaah (peace and
blessings of Allaah be upon him) told Abu Bakr to tell her to do ghusl and
enter ihraam. 

Narrated by Muslim, 1209 

Shajarah refers to Dhu’l-Hulayfah, i.e., the meeqaat from
which the people of Madeenah enter ihraam. 

Al-Nawawi said, concerning what we learn from this hadeeth: 

This indicates that the ihraam of women who are bleeding
following childbirth or who are menstruating is valid and that it is
mustahabb for them to do ghusl before entering ihraam. There is scholarly
consensus that it is obligatory, but our view and that of Maalik, Abu
Haneefah and the majority of scholars is that it is mustahabb. Al-Hasan and
the Zaahiri madhhab said that it is obligatory. 

All the actions of Hajj on the part of women who are bleeding
following childbirth or who are menstruating are valid, apart from Tawaaf
and the two rak’ahs following tawaaf, because the Prophet (peace and
blessings of Allaah be upon him) said: “Do what the pilgrims do but do not
do tawaaf.” 

Sharh Muslim, 8/133 

If a woman has not yet
done the obligatory Hajj, then pregnancy is not an excuse for her not to do
Hajj, because she can avoid the places where there is too much crowding and
pushing and shoving. If she is unable to stone the Jamaraat herself, she can
delegate someone to do so on her behalf. If she cannot do tawaaf and sa’ee,
then she can do so in a wheelchair, and so on. 

Many people manage to do Hajj in comfort without any
hardship. 

3 – Yes, if a woman is pregnant and trustworthy doctors tell
her that going for Hajj will pose a risk to her or her baby because she is
sick or weak or for some other reason, then she should be prevented from
doing Hajj that year. This is indicated by the words of the Prophet
(peace and blessings of Allaah be upon him), “There should be no harming nor
reciprocating harm.” (Narrated by Ibn Maajah, 2340; this is a hasan hadeeth.
For details of its isnaad see Jaami’ al-‘Uloom wa’l-Hikam by Ibn Rajab,
1/302) 

4 – Some doctors differentiate between early pregnancy, when
there may be a risk to the foetus, and late pregnancy when such fears are
groundless. 

And Allaah knows best.