Yes, it can have an effect on the timing of your next period. Whilst it is likely that your next period will be either early or delayed ,it more frequently happens  that your next period will be a few days late. However, if your period is more than 7 days late; if it is unusually light or unusually heavy; or if you experience symptoms such as abdominal (stomach) pain, breast tenderness, vomiting or nausea, you may be pregnant. You should do a pregnancy test right away. If you are pregnant, it is important that you see your doctor.