Baby in NICU and Im sad

My baby was born Wednesday at 34 weeks and 4 days gestation. He is in the NICU and doing well. He is breathing on his on eating well and is a good weight. They say they will not let him come home until he is 36 wk gestational age. That's only another week but I'm having a hard time. I miss being pregnant. Its like I go from pregnant to no baby at home. I feel disconnected from him and I miss him. I'm also pumping so he can have my.milk and am having problems with my right breast. Its so swollen and barely puts out any milk. Its just a sad and difficult time. I know things will get better but wanted to vent. A little sad right now.