Adjunct professor looking for advice about getting pregnant during semester?

Hi everyone! I just got married and me and my husband are talking about having a baby. I’m worried about how it would work with teaching as an adjunct. I feel like if I take a semester off that they could give my spot away to whoever they get to fill my class. I’d like to just have a baby over the summer, but his father is very ill and the doctor says his dad may not live till next summer. My husband wants his father to meet the baby before he dies. What kind of advice can people give me? My sister told me that I’d need at least a month off realistically after having a baby. There’s things I can do virtually with a class but that’s a long time and I don’t know if that would be allowed.