HELP!!!!!!

My son is 3 days old I can’t really get him to latch for a long period of time so I’m breast feeding him first and supplementing the rest with formula. I got super engorged last night to where it’s PAINFUL to breastfeed him so I pumped while he was eating his bottle, but there’s no relief even after pumping I still feel the stinging my boobs are rock hard I’ve tried hot towels I’ve tried massaging them I have cabbage leaves on as I’m typing this. I’m hurting so so so bad I’m planning to go to my local WIC office and have them help me get him to latch since I had him over the weekend everything has been closed. It’s silly but I legit feel like I could go to the doctor it hurts that bad!! What can I do? Am I doing anything wrong? Wtf.....