((hugs)) from here too.
The one thing I've learned about grief (apart from that it sucks!) is that you really do need to let yourself grieve. If you feel like curling up in a ball and crying, then do it. Give yourself five minutes, or ten, or half an hour, and just fall apart. THEN get up and get on with it.
You can't deny the pain, just set the time limit so it doesn't take control of you. Let yourself have a wee bit of weakness, and THEN you can be strong. And while you're not being strong, we will be for you.
((more hugs))