Kylie,
I am so sorry for the loss of your precious baby.
Please take your time to grieve the way you feel is right. I know your Mum means well, she doesn't want to see you hurting... perhaps you need to explain to her (or your DH could) that you need to cry... you need to travel through these crashing waves of emotions in order to get to the calmer seas... it will take some time, but you will get there.
Your husband is right... you will never, ever forget.

Thinking of you