starting to question marriage need advice

I had my son 6 weeks ago got a daughter to and we keep bickering and tonight I say to him I don't feel like I get a thank u and i do most night feeds but been unwell for a week so he had to take over now hes like I barely do anything when I'm looking after the kids I was like it would be nice to say somethig positive or a thank u for what I do hes like your a mum it's your job I'm suffering from postnatal depression and feel like hes not helping when I get fuck all