Is it possible to have a baby if you have recovered from leukemia?

Sometimes. Leukemia cancer treatment can kill many of the eggs in the woman's ovaries and the sperm in the man's testicles (worse the older the woman at chemo). Women should have ovarian reserve (egg quality) testing - amh, FSH and antral follicle count. These measurements should give you a good estimate of fertility. Don't wait because female fertility declines after treatment. See your doc, best wishes.
Yes it is possible. Success of pregnancy depends on your age now, ovarian reserve when treated from leukemia and type and dose of chemotherapy received. The first step is evaluation of ovarian reserve through vaginal ultrasound and fsh, Estradiol and amh levels.