Post natal depression

Anyone who is going through this or has done with a previous pregnancy - did you see a doctor? What happened when you did and what treatment did you receive?

I’m really struggling at the moment. I don’t know if it is PND but I feel overwhelmed nearly all day everyday. I keep reading how you should take a few hours to have me time but I can’t do this because my baby is EBF and wants to feed literally every 45 minutes. I just don’t know what to do. I cry all the time and I just feel like such a failure.