soft markers during anatomy scan

My sweet baby girl has a few soft markers and I was wondering if anyone else has gone through or know someone that has gone through this same situation. Ultrasound shows cysts in her brain which COULD be a sign of trisomy 18, but babies have them periodically and they could just go away. The ultrasound also showed a flicker on the heart and a white spot, which also could correct itself.. or could be a sign of Down's syndrome. So there are two different soft markers for her, but my early nt scan and blood work showed I had the lowest possible risk for either. So worried for my baby, and won't know much more until my next appointment in a few weeks.