BIRAD 3 with Cluster cyst?

hi everyone. Friendly neighborhood hypochondriac here. So today I had my mammogram and ultrasound due to extreme anxiety over left breast shape. Mammogram was normal (but I guess dense as I’m 36) and the left breast and armpit was normal in an ultrasound. The radiologist came in to talk with me and asked me if anything else concerned me. I said as I’ve been feeling my breasts a lot I felt something that might be lump, might be normal breast tissue on my right breast at 3 o’clock. So he puts the wand there and there is a black whole in my breast and says it’s a cyst, then says I wonder if its a lymph node, no, it’s a cyst or a cluster cyst. I get super scared. I ask him birad score, he says 3 because It was palpable to him. Said to come back in 6 months. I asked if it was a cyst couldn’t he aspirate it and now I’m schedule next week for a biopsy on a “cluster cyst” that measured less than 1cm. To say I am scared now is an understatement. None of this sounds normal to me. Can anyone shed some light? I don’t have the reports, my husband is retired military and I am seen on base. But the cyst looked like a long black oval. Someone help