A little husband rant

Erica
So my husband has 3 kids from two prior relationships. The exes and I get along as best as possible but his 9year old's mother I truely could do without in life. I just don't like her at all. Today he was on the phone with her telling her how we start birthing classes today and then he is laughing and saying thinks like "I know right... Such a waste of time..."  Now me- I'm s fumming mad and crying because I am so tired of him acting like this is all old hat and I will be fine blah, blah, blah.... I don't want him to come to the class if all he is going to do is roll his eyes and complain that this is two hours a week that he could be doing something else. I'm not sure what else he thinks he needs to do. It's not like he is cooking or cleaning or helping out in any way. I work full time too and manage to cook dinner and make sure we do not live i filth.  56 more days to go and at this point I'm SO OVER BEING PREGNANT! 
​End of rant. Sorry.