Hi Doctor, I Have A Question Regarding My Cycle With

Hi doctor,
I have a question regarding my cycle with injectables. My estradiol levels are 3400 on cd13 and number of mature follicles were approxmately 8 , above 20mm there are 3 follicles highest being 23 mm ,and above 17mm there are 4 follicles and one 15mm.
My husband semen analays is 50% motility ,6% morphology and sperm count is 50million.
I did hcg trigger with 5000iu on cd13 which is yesterday.

My RE asked me to do timed intercourse starting tommorrow cd15. Now my concern is since there are so many mature follicles , is there a high amount of risk for multiples.What are my chances of getting pregnant with singleton. And also chances of developing OHSS.

Thanks

Thanks