Can one become pregnant after they've had a Hysterectomy?

No, not without a uterus....

Actually, various case-reports have shown that women could get pregnant even without an uterus; they become ectopic pregnancies of the abdominal wall. they are highly dangerous and rarely evolve into full term pregnancies.

based on reserach done, women who had partial hysterectomy-only uterus has been removed,is still able to conceive.
but that would be so life threatening since it would lead to ectopic pregnancy.

This is very serious and must be removed immediately....A woman who has had a ectopic pregnancy with a Uterus, will often have to have some corrective surgery by a OB-GYN before she can get pregnant again...That is if she does not get pregnant right away....

Caroline