ebsta - I know exactly how you are feeling. I went through an identical situaton.
Fell pregnant after first time trying, few days later i started bleeding. I went to hospital and they confirmed it would be a miscarriage and as i have a negative blood type also which is very rare, they gave me an anti d shot just incase the fetus lived - but it didnt.

I let my body go through a normal cycle before ttc again - then the next cycle after that i fell pregnant and now i am 36weeks along! Do not get to down as hard as it is i know. You will have a beautiful baby soon and you will get that BFP very soon. Best thing i did was accept that things happen for a reason - there might have been something wrong with that fetus. I moved on, and focused on the future and didnt stress to much about it (okay i did...and nearly got depressed, but i realised that getting so worked up doesnt get you anywhere!).

I know what its like to want that BFP NOW - NOT LATER - NOW! Just like many other women know what its like, and sadly many other woman still waiting.

Goodluck with it all and i look forward to hearing your progress.

Danielle