how long does engorgement last?

Brittany
My boobs have been engorged for like 3-4 days now and I have tried the relieving pressure by hand expressing, hot & cold compresses, feeding baby often and I swear nothing is working. My nipple are cracked and sore and I have clogged ducts I feel idk I massage them and can feel lumps all over. I am miserable what do I do??