3rd round iui July

Had another ultrasound today, still have 4 follies sizes 20, 20, 19 & 19 we take the hcg ovidril shot tonight at 10am with the iui on Tuesday at 10am. I'm so excited and praying that this will bring us our bundle. I don't want to think negative at all but this is our last chance of iui before the doctor starts ivf and I'm terrified of the ivf process. However I am remaining positive and just going to pray this is it. Any advice on the shot any other ladies doing a July round. Baby dust to you all