You may have only completed the first step to the process (there are two parts to subscribing, one is on this website, and one is verifying the subscription in your email).
I know it feels like "overkill" to verify you want these emails when it's for a simple swimming website, however, Google FeedBurner (the "thing" that sends you your email notifications) wants to make sure you really DO want them!
If you would like step by step instructions to subscribing, use the following document:
How to Subscribe to GHSC Email Updates
If you have questions, please email me (Laura Sponaas)