Swollen breast lymph node

Hey everyone. I had a ultrasound done after finding a lump in my breast (that turned out to be just tissue) but while an ultrasound was done they found a 4 mm suspected swollen lymph node in my right breast. No other symptoms other than sometimes my breasts hurt. (hormones). BI-RAD 3. Follow up in June. (I’m 28 weeks pregnant also). (22F) I’m just so nervous. How do I get rid of this anxiety? 😢 my breasts are also extremely dense. I have had two doctors do a breast exam + have 2 ultrasounds on my right breast and 1 ultrasound on the left. (4quad) so why am I still so worried 🥲