Overwhelming Feeling of inadequacy

My twin girls are almost 3months old, I am a first time mom, and a new stay at home mom. I feeling like I am failing at everything I try to do and just have this huge overwhelming feeling of inadequacy in everything. As a wife, a mother, a homemaker, a friend and just as a person in general. Myself esteem is down the drain. Try talking to my husband about feeling like a constant failure and he says I'm just feeling sorry for myself. Idk what to do....