Scared...mastitis?

I have had a clogged duct since early Friday am

And it’s now Monday am.

I have been massaging, all fours and expressing after my lo eats.

Why hasn’t it gone away?!

This is the same duct that has clogged twice before but always went away within a few hours

I think it’s from wearing a specific tight shirt. Could that be possible?

Has anyone ever had a stubborn duct like this?!

No fever or body aches or anything yet. Is this what I need to look out for?

I’m scared it hasn’t gone away yet and I don’t want to lose my supply 😔

Lo is 5.5 mo