Can I ask him to call in?

Im four months preg and sick with a really bad cold.My house has fallen apart since i got sick,it looks like it got raided.And I have a three year old and a one and a half year old who are sick too.I really need the help and there is no body else I can call right now.Do you think he'd get fired if he did?He's a hard worker and the only time he missed work at this job is when he fell off our house and broke his leg and when he got swine flue.Besides that he hasnt missed a day.