One baby growing slowly at 18 weeks

[user1471523870]

I had a scan at 16 weeks that showed one of my twins was below the 5th percentile (but moving, with heartbeat, placenta and liquid fine, DNA and combined test fine). They said he could just be a small baby but better have another scan in two weeks time.
This brings me to today. My scan at 18 weeks still shows baby is smaller than average in all measurements. He has grown at the same rate of his sister and I was really not expecting the consultant to worry me so much.
He scared me so much I ended up in tears. He said they have serious concerns over the baby, that it can still go both ways....and at that point I lost it and started crying.
I genuinely didn't think the situation was so bad. I am terrified.

Has anyone had a similar experience? And what was the outcome?

@user1471523870 I've never been in your situation but just wanted to pop you a quick message to say hello and don't feel alone. I'm sure there is someone who will catch up with your post really soon and be able to share their experience with you. Good luck xx

Are the twins in separate sacs or sharing a placenta? Pregnancy is such a stressful time. Just take it a week at a time. I lost a twin at 8 weeks and have since had lots of bleeding and have been told they want me to get to at least 28 weeks then take it from there. Im almost 21 weeks now just ticjng off the days. Not the same situation as you but just keep ticking off the days. Thats all you can do. I think consultants sometimes give worst case scenario though or thats what Im telling myself. In my head I will get to 42 weeks with a normal weight baby.