Hello girls! I'm having a nervous breakdown? The baby is constantly cr…

Hello girls! I'm having a nervous breakdown? The baby is constantly crying for no reason, you could say that from birth. I don't think it's lack of attention, we live separately and all the attention is only on her. We go to parks and shops. Is this spoiledness or not sure. I'm sure she doesn't have any pain. Everything is fine in my head. She cries during the night and day. It's not a crisis period. She wakes up at least 4-5 times at night and cries, then falls asleep herself. Do you think why? Should I see a doctor? If yes, what kind? Can magnesium be given without a doctor's prescription? To