As mentioned, Monitoring Times is an excellent source for what is out there to listen to. But it all depends upon what is of interest to you: Broadcast, or "utility" transmissions. Broadcast are the AM stations from around the world that often boom into a receiver of any size and capability (and with whip antennas like yours has). Utility transmissions are typically on SSB and are everything else, such as aircraft, military, data (you can buy decoders for the various types of data transmissions), etc. Ham also. My favorite (but I have not heard one for a long time) are the so-called "numbers" stations from Cuba, the former Soviet Union and other countries. These were reputedly coded messages for operatives around the world, and quite spooky to listen to (no pun intended). There are all sorts of interesting things to hear on SW! You may find that if you are interested in utility transmissions, you'll need a more sensitive receiver and a long antenna. I run an Icom R-75 with an Eavesdropper trapped dipole, which is fairly short at 43 feet (I have it in my attic).
In any event, check out Monitoring Times to see what is out there!
Have fun!