Positive OPK & trigger same day???

Tiffany

Had ultrasound this morning with 4 follicles and one 21mm the others 14-16mm. Took my OPK at 7 pm couldn’t do it earlier bc of work and got my peak, had one day of flashing smiley yesterday. Doc called and said to do my trigger tonight between 8-10 pm. Wondering if it’s possible I might have O naturally before doing trigger? Is this going to work out? Anyone have this happen?