Welcome to BB. You've had to make a very difficult decision and go through a termination, no wonder you are feeling weepy and upset.
Your body has gone through a huge upheaval with the pregnancy and termination and your hormones must be all over the place and that will make you feel pretty awful for a start.
Just because you decided to end the pregnancy doesn't mean you shouldn't be grieving. Of course you are! It's a terribly tough decision to make. Of course you will find yourself feeling guilty and grief stricken and wondering if you did the right thing. The dream you had is that grief and upset trying to get through!
Yes it's sad that women who desperately want a child can't have one, and it's marvellous that you can appreciate how they must feel.
Your situation is different. You can't help those women except by giving them understanding and compassion. Now give yourself some of the same - allow yourself time to grieve the loss of your child and have compassion towards yourself. Give yourself time to recover. Your body will need time as well.
That dream was telling you that you need to grieve.
If it feels overwhelming do talk to a doctor or nurse or counsellor and get some support.
Be kind to yourself for a while, Ok?
Please keep talking here if it helps. Others will come by and support you.