Hi, My question might look strange to u guys, but still need your help ... , I had a very tough time having sex with my wife, because it was her first time and it was very hard and painful for her, she was hesitant about it, but as there were just two days left in her periods, we finally managed to have sex, and since we were just experimenting if its going to happen or not we were not using any protection and I cum inside her, Now the problem is that her periods didnt started after two days where as they were expected, (she has a very quick regular cycle of 21 days isn ... fast ?) ......... now we are concerned she never have delays in her periods, is this possible that two days before periods the process of ovulation is happening inside ? if its so, is that so quick that it can stop the coming periods of next two days ? its the fourth day of delay in periods, how long we should see if its just a delay ? I need help and guidance ?

Thanks,