Good day! I went to see a mammologist and had an ultrasound of my brea…

Good day! I went to see a mammologist and had an ultrasound of my breasts, everything is normal according to the ultrasound, the mammologist felt my breast and said it's also normal. Closer to the armpits she pressed hard and I told her it was painful and she determined mastitis... Could you please tell me if such a diagnosis is enough to determine it? I haven't stocked up on pills and treatment for 3 months.