Fullofhope it all happened really quickly for us. On my last cycle with O'Dowd I had a chemical pregnancy. When I was in the clinic getting my last bloods it was suggested to me we see Flynn (the nurses would rather you stayed with the clinic & changed Dr's than just leave). Anyhoo they actually called Flynn's rooms & we got an appt the following week!! I think it was a cancellation but he's pretty accommodating with his times (maybe explain your situation). I had to wait a cycle before we went again because of the HCG still in my body but my 4th cycle was in March & we had our 5th cycle egg pickup 1st May so it happened quite quickly. You don't need to have all the tests again but you will need another referral from your GP. Bopp could refer you but that only lasts 6mnths as opposed to 12mnths from GP.
Id suggest getting an appt & referral now so you can get the ball rolling!