Nervous about Baby?? Pls Advise

Kayla • Mommy of two with one on the way :☆ Aliyana Adalene 10-14-16
I am Having my 3rd child.....when I was 18 weeks I went to my Anatomty Scan and they told me the baby was Breech.....when I was 19 weeks the informed me I had issues with my placenta which could cause the baby to be small.....I'm currently 20 weeks and 2 days and haven't felt baby kick is this normal ?? I felt my other 2 around 16-18 weeks 😕