I had mastitis a while back and I think I might have it again, but I don't have all of the symptoms. A few days ago, I started to feel a tender spot on the other breast. It didn't go away, but didn't get worse either. Last night I woke up with fever and have had it all day. I have no other symptoms like last time, when I had the red streaks and a visible lump in my breast. Could this be mastitis even though I don't have all of the symptoms?