Worried First time pregnant lady

Does anyone know - if the anatomy scan showed that the baby was developing well. Everything was good... What are the chances of anything going wrong now.. Meaning deformities or anything of that sort. My friend just told me her daughter found out her baby has a crooked spin at 23 weeks. I didn't ask if they saw that after her anatomy scan though. I had my scan at 18 weeks. I'm not 25 weeks. I just worry all the time. It's crazy. I just hope my baby is developing right.... Or is he fully developed and just gaining weight from that point on... 
Also last night I was spotty. I would have called the doctor but it was hardly anything. This happen to anyone else?