Hello, thanks for using health care magic its less likely that you could become pregnant unless a good quantity of his sperm were usually deposited in your reproductive tract. A good quantity of serm has to get into you so as to be able to survive the long distance up to the tubes and to be able to cause fertilisation. You should do a pregnancy testing with early morning urine. If it turns out negative, it coould be that you have polycystic ovarian syndrome or some other problem. Stress and obesity as well could cause delay in menses. Hope this helps Best regards Dr Achuo