The answer to whether a woman can get pregnant in Jannah (Paradise) is a matter of differing opinions among Islamic scholars.
Some scholars believe that if a person in Jannah desires to have a child, Allah will fulfill that wish. This implies that pregnancy would be possible if desired.
Other scholars maintain that while marital relations will exist in Jannah, procreation (having children) will not.
Therefore, a definitive "yes" or "no" cannot be stated with certainty. The matter ultimately rests with Allah's will and the desires of the inhabitants of Jannah.
In summary, there are differing views among Islamic scholars regarding pregnancy in Jannah. One view suggests it is possible if desired, while another view suggests that while marital relations will exist, there will be no children.