Is my marriage over ?

Today is Valentine’s Day and my husband and I started off good. He surprised me with roses and the baby with a bear 🐻. It was all good until he said he thinks my mom is conspiring to possibly get him out the picture and set me up to take the baby away. Yesterday my mom was over our house and she saw my husband nit pick at me for 30 minutes straight and she didn’t say anything. Later she text me and said she didn’t like how he was and is treating me I told her I was tired of arguing, We have been arguing non stop and I don’t know why. I am so depressed and I cry all the time partly from postpartum and partly because I feel like my marriage is falling apart and idk what to do. He made a comment during today’s argument and said if he and I ever break up he’s taking my daughter and leaving the state. I lost my shit and let him know that wasn’t an option. I feel like he nit picks at me all day. Today he told me that I spend to much time in my phone or on social media and I need to find other ways to manage my time like play chess!? Wtf I don’t know how to play chess and have no interest in it. He also told me I shouldn’t be telling my mom our business and I get that but I need to talk to someone I am just so sad. But this is how bad it is between him and I. I am just tired of this. I am unhappy, I’m depressed and I barely eat. It has gotten so back that I find reasons to stay out at the grocery store and I don’t want to come home. I realize I need therapy and help for the PPD which I started taking meds for but he isn’t helping. I feel so lost 😞... I feel overwhelmed and like a failure.