baby not growing

Kristi-lee
So today I got a call to go straight in for a growth scan due to reduced movements, pains and concern since Friday along with contractions showing on the monitor for over two weeks. They did the scan and baby has gained any weight in weeks. They have Started me on steroids injections one today and one tomorrow morning. I then have to go back Wednesday for a special scan on my placenta. Any of you ladies had this? What were the out comes? I am 31+4 a worried it's to early for him to come out and be healthy. They have advised I take my hospital bag in car in preparation.