Answer
Wa `alaykum as-salam wa rahmatullahi wa barakatuh.
In the Name of Allah, Most Gracious, Most Merciful.
All praise and thanks are due to Allah, and peace and blessings be upon His Messenger.
Dear brother, thank you for your question and your interest to know more about Islam and its values and teachings.
It is not permissible to abort a pregnancy at any stage unless there is a legitimate reason and within very precise limits. If the pregnancy is in the first stage, which is a period of 40 days, and aborting it serves a legitimate purpose or will ward off harm, then it is permissible. But aborting it at this stage (for fear of the difficulty of raising children; fear of being unable to bear the costs of educating them; or fear for their future, or because the couple feel that they have enough children) is not permissible.
It is not permissible to abort a pregnancy during the second and third periods (40 days each), until a trustworthy medical committee has decided that continuing the pregnancy poses a threat to the mother’s well-being: There is the fear that she will die if the pregnancy continues. It is permissible to abort it once all means of warding off that danger have been exhausted.
After the third stage — that is, after four months have passed — it is not permissible to abort the pregnancy unless a group of trustworthy medical specialists decide that keeping the fetus in his mother’s womb will endanger her life. That should only be done after all means of keeping the fetus alive have been exhausted. A concession is made allowing abortion in this case so as to ward off the greater of two evils and to serve the greater of two interests.
Answering your question, Sheikh `Abdel Khaliq Hasan Ash-Shareef, an eminent Muslim scholar and Islamic preacher, stated,
No, this is not permissible. A one-year-old child can eat and drink by himself or herself if weaned. Moreover, pregnancy does not prevent from work, and many pregnant women go to their works everyday.
After all, Allah is the All-Provider and All-Sustainer, and He has given you a blessing in the form of a child. So, do not refuse His blessing. Your case is not a case of necessity.
Allah Almighty knows best.