Baby nursing strike and clogged duct

My daughter hasn’t nursed for the past 2 days. All of a sudden she just won’t nurse no matter what I do. I pump and give the milk to her, but shes not into it. On top of that I have a clogged duct that I can’t get out for the life of me. I’ve tried everything and I’m super worried I’ll get mastitis. Any advice to remedy the nursing strike and clogged duct? Thanks mamas