twins! 6 weeks and 2 days

Lauren • mommy to two boys 7.25.17 & 12.18.18
Just found out we're having twins. Heard two beautiful heartbeats! However this is so bittersweet. Before I became pregnant I went for an hsg test and found out my uterus is smaller than usual and it could be high risk to carry twins. I'm so worried I wouldn't carry them to full enough term. Does anyone know someone who was in a similar situation? Any advice would be so appreciated.