Ivf canceled due to only one dominant follicle

Hi I’m new to Ivf have been trying natural for past 8 years so decided on Ivf I started me menopur 450 dose the last transvag us was 14th feb my fertility specialist nurse called me and said that they are canceling the cycle due to only 1 dominant follicle being 18 or 19mm and to inject 250mcg of ovidrel that same night at 9pm so we did this and tried the baby dancing for the next 3 conservative days what I would like to know is what are my chances for a bfp n how long until the trigger shot is out of my system I am to get a blood test done on the 28th I’m really hoping that this is successful