Motherhood is fucking HARD!! Repeat after me!! It.Is.Hard!! And admitting it is hard does NOT make you a bad mother. It also does not mean you do not love your kids more than you ever thought you could love another human being.
Being a mother to a newborn is even harder. People and books tell you what you may expect but nothing prepares you for bringing a brand new baby into the world who you are completely responsible for. They don’t sleep, they cry all the time and they cannot tell you what the hell they want! You get zero gratitude from them, it is a completely thankless job.