Here is what to do:
(take any part of this you wish)
Hot bath with wine and possibly chocolates (which, conveniently, are on sale today!)
Add bubbles and yummy smelling stuff that you save for special occasions.
Wrapping up in warm blankets and such and watching a dumb movie on TV.
Know that we love and an are so sorry about you negative when things seemed to be going so well.
Let yourself grieve. I know you have been here before but still, let yourself feel it.
Collect all your info together and see where you are.
And, personally, take a month off. Clear all the meds out of your body and see how you feel about life.
I don't know who your RE is but it seems after reading this board for a while, labs really really matter. If you do chose to do another round it seems to look like you are responding well to the meds, maybe a different lab could help with a better outcome? Also, has DH had the sperm DNA test people have mentioned a couple of times? Just a thought, I know there are a number of posts about it.
It is so hopeful that you are a good responder so, in my uneducated opinion, you have a good chance. Plus, you know what protocol you respond well to, which is HUGE. Plus your age, as you know, is an advantage.
Whatever you do I will give you the same advice I was giving after my IVF BFN, be gentle with yourself.