Hello everyone! My girl seems to have mastitis?

Hello everyone! My girl seems to have mastitis ?, I'm very scared. Yesterday started pains in my left breast. Started expressing, it came out a little milk. Today massaged for an hour under the shower, milk came out a bit, but it didn't get better. At the end, there was no milk at all, not even drops, I massaged with my hands directly. I feel lumps inside, big and small. I blame myself ?. As soon as I found out about pregnancy, I immediately stopped my daughter from breastfeeding, sometimes expressed. My right breast was more active, my daughter loved the right breast, and on the left side she gave it once a day, maybe. Now on the right