Oh Vanessa,
I am so sorry sweetie - i know how you feel - i have been there many times - whilst on the TWW you alway try to stay positive and hope that the little embies are doing there thing and then bam - and positive vibes for the next cycle. With my clinic SIVF satelite team they only visit Coffs Harbour every 3 months so i have no choice but i have heard other clinic to back to back cycles.