HALP! Possible mastitis onset?

Sami • 🌻1.31.18💙

I've had plugs before and dealt with them fine with dangle nursing or applying a warm compress or a warm shower, but I haven't been able to get ANYTHING out of my left breast all morning! I felt a knot right at my armpit and I pumped and massaged to try and encourage it out and while I don't feel the knot anymore, now my chest and shoulder above my left breast feels raised and slightly swollen. Any ideas or tips I could try? No fever as of yet, but I donate to a mom near me and JUST stocked her up so I've only got about 40 ounces in the freezer so I wanna make sure I nip this in the bud quickly before I get too low!