Sarah, don't feel silly, it's a real achievement, and you're allowed to tell everybody. I know that civilians don't always understand just how signficant something like is, so you've every right to rely on the trench warriors of WW to cheer you on.
Thanks Emma, after reading the messages of support and all the positive words, my face started blushing red and I was cringing a little thinking, oh no - I've been really smug here. But I'm proud of myself and that overrides the red face - so its all good!