Ay, I feel you, that's scary to find out, talaga. A few of us moms in the group have had subchorionic hemorrhage, and honestly ang dami ng successful deliveries, kaya don't lose hope, but please follow up with your OB regularly para ma-monitor closely kung paano siya umuusad. At 18 weeks you might not feel movements yet kasi normal pa yan, especially kung first time mo, kaya that's okay, some moms feel it later pa. Best thing is to rest, avoid heavy lifting, and go to every appointment para makita kung nag-resolve na siya or if you need extra care. Thinking of you!