Why is my wifi on my ipod touch 2nd gen not working?

Can someone help with the wifi on my ipod touch 2nd Gen? Yesterday it suddenly stopped connecting to anything wifi. No settings were changed. The only thing I did was go to itunes for the first time in well, forever. I always use it on my computer to go in itunes, not my ipod. Anyway, I'm pretty sure I could still get on Safari after that but I don't really remember. At some point in the evening it stopped connecting. I can't get on Safari, my mail won't refresh, it would connect to the app store, nothing. Sometimes a message does pop up saying there was a problem connecting to the server. I can't figure this out, internet on my computer is running perfectly fine. My ipod wifi is on, airplane mode off. When I go into my settings it shows my network and that it's connected. I haven't connected it or synced it to the new itunes. I actually haven't downloaded the update yet. Ipod is up to date though without the new sync. Can anyone help me out? I'm very confused.

Thanks