Husband's "joke"

So I've been home on maternity leave for the past month while my husband has been working during the days and weekends. I feel like I've been on "parent duty" around the clock while he only parents from 7pm-11pm. I'm sleep deprived and many days I can't shower or eat a decent meal because I'm tending to my baby. Tonight my husband made the comment that taking care of the baby is "not that hard" and I fought back tears thinking how FAR from the truth that is. Later tonight I told him how demeaning that comment was and he said he was just kidding. I can't help but feel insulted. So tonight I told him he can take care of the baby, but now I feel so guilty standing up for myself just to get some sleep! 😣😢 Feeling frustrated...