Baby blues

I have had a very complicated labour. I was induced due to preeclampsia and then rushed for an emergency csection under general due to a placental abruption. My milk hasn't come in so I am suplimenting baby with formula until it does. I have to feed her every 3 hours in the breast using a supply line and after this I need to pump both breasts until they are empty to try to bring my milk in.  All up if Bub settles right away I get 1 - 1.5 hours sleep between feeds. I am exhausted. I am emotional and feeling like a failure as I can't even produce enough milk to feed my baby but what is worrying me most is when I look at her I don't feel this overwhelming love I just feel exhaustion! Is this just the baby blues or something worse? I'm 6 days postpartum.