Help? Is it normal to feel this way

Babygirl

Not sure if this is normal but I’m getting concerned with my self I just had a baby and have no appetite since I left the hospital if I eat once a day that’s more than enough I’m not hungry I have no desire to eat i just want to be alone with my son all the time I don’t want to hang out with other people for any reason I just want to lock my self in my room i also can not sleep at night or when the baby sleep I eventually pass out but can’t sleep when I want to I’m conscious of these changes in myself and force my self to interact with other people and eat but I’m concerned should I contact my doctor or is normal for new moms to feel this way