Breastfeeding failure

Mikell
I wanted so bad to breastfeed my son. I was able to breastfeed my daughter for a bit over a month before complications took place. Now my milk is drying up and my son isnt even two weeks and I have tried everything to get it back. I was so determined to go longer this time not shorter! I feel like I failed my son. I have been crying all day. I'm trying to pump what I can but there is already nothing to pump. Hate feeling like this.