Unfortunately that you have received your periods chances are low that you are pregnant. Sometimes menses comes late from the due date. This might be hindered by different factors. Like say change of environment or meals. I personally I am an irregular person. I am very sensitive with any change in the external. That means when I travel, I might even miss my periods for 2 months. It is something normal to me. And I cannot say that there is something wrong cause the doctor checked me out. So missing periods for a week should not worry you. It seems you are so much looking forward to conceive. But you cannot keep your hopes that high. Even after you have seen that you have already started receiving the periods. I don't think if you are pregnant. However, you can keep on trying. But on this one. Do not rely a positive outcome form it.