It says this is a good year to have a baby yet sheep and ox aren't a good combination

Mia, I think you worry too much. The combination here refers to a love relationship. For you and your kid, it may not work. As long as you take good care of your kid, I think he/she will repay you with a harmonious relationship. In my view, education is very important. If you do your best to teach him to be a good man, your kid will be kind and maintain a good relationship with you.