IUI and trigger shot

The past 4 days I've been testing at "high" ovulation on my opk. I had my IUI scheduled for today and we did an ultra before hand to check my eggs. 3/4 were still there so we proceeded with the IUI and I was given an HCG trigger shot at the same time. I know they usually do the trigger a day or so before the IUI so I'm nervous that this cycle will be unsuccessful. Has anyone had an IUI and trigger shot the same day? My eggs were measured at 3cm so they were definitely matured so I'm hoping the shot helps kick them out in time