The evenings are the worst

I love my little baby but I just really need to vent right now. The doctor recently diagnosed my 5 week old with colic. It’s been incredibly difficult as he’s fussy most of the day and can hardly stand to be put down, but the evenings are the hardest. I feel so bad when he cries and I can’t figure out what’s wrong or how to comfort him, and I feel so discouraged about my relationship with my husband and how little time we have together now. I miss having relaxing evenings together watching Friends and eating dinner and talking about our day. On top of all this I have postpartum depression and am being treated for mastitis, and now my milk supply is going down, so much so that my baby refuses to nurse for more than a few minutes and just screams and cries into my breast. I’m so discouraged about everything — my marriage, my parenting, and now my ability to feed my baby. I feel like I’m failing on every front and I’m so tempted to just give up and start giving him formula if for no other reason than to maintain some semblance of sanity in our home. I’m so exhausted and sad every day and it’s so hard being alone all day. My heart is hurting and I miss my old life so much.