Really feeling the baby blues.

My daughter is 9 days old and I keep finding myself crying all the time. I’m very tired and I keep getting very stressed out and feeling like I’m not doing a good job. When she cry’s I feel so helpless especially today as she keeps crying and I’ve tried everything to find why. I’ve been struggling with breastfeeding also so I’ve been feeling a failure from that 😩 I just feel so down constantly like I’m struggling to cope. I’m scared to admit that I’m struggling because I feel like it’s going to make me a bad mum😔 how long do these baby blues last 😭