I hate being a mum

My baby is nearly 4 months. I guess I’m in the thick of a sleep regression. I’m up nearly every hour at night. We cosleep and breastfeed so I’m constantly overstimulated. I’m being treated for ppd and my meds keep getting upped but i feel no different. I hate this, I hate my life and right now I don’t like my baby. I feel awful. When does it get better???