Clogged Ducts Suck...help!

I had a clogged duct today with a small milk bleb you could see on the nipple and it finally released tonight while I was hand expressing after hot compress. Well milk went everywhere for a good solid two minutes or so. It felt like instant relief! However, once the flow stopped my breast feels so much better, but it still feels very sore, tender, and more dense than normal. Does this just take a few days to go away, or how do I know if it is still partially clogged? 😕🤷🏻‍♀️ I do not want to get mastitis... so any tips on dealing with/preventing clogs and mastitis?