Cervical cyst?

I am 22 weeks pregnant & received a call from my dr that on my ultrasound they had seen a cyst & would like me to come in to get it checked out.. im nervous & am wondering if anyone has had this before? Im 18, have a daughter who is 10months old & 22 weeks pregnant with a boy for any backround needed... im wondering if having my baby then another 1 so soon could be the cause of this?