Thank you so much for writing back! I'm so happy to learn that you told your boyfriend and that it lifted a weight from your shoulders. And I love your mature attitude. I can tell that you will make a wonderful parent, whether it happens now or in the future.
You are also doing the right thing in just going on with your life and trying not to stress over it too much. You are right, stress and worry can delay a period even longer.
Please come back and let me know when you know something. I have my fingers crossed for you.