Talk to Gynecologist on Egg Rupture

I got my day 11 follicular scan done and follicle size was between 18-20mm.One scan showed 18mm and the other one showed 20mm.I did again on 12th day of cycle in afternoon and there was no mature follicle present.It got ruptured.we had intercourse after that after i got to know that egg has ruptured.Is it normal for egg to rupture on 12 day of cycle and is there a possibility of concieveing after getting to know about the rupture? or the ovulation timeline would have been gone? please i need your opinion doctors