Couldn't think of a better title for this, so here goes.

I'm a 19 year old female. This last week or so I've been finding that I'm always getting the feeling that I need to pee. It feels like it does when I hold it in and can't go to the toilet, but it's happening all the time; once I've been to the loo it can take as little as 10 minutes for the feeling to come back and I need to go again.
There is a history of diabetes in my family; so I was thinking it could be that; but it's started so suddenly. I normally go to the loo a lot at night; but that's because I drink a lot more at night than I do during the day. But now I get the feeling that I gotta go even when I've hardly had anything to drink, or my last drink was hours and hours ago.
This is really weird for me and I'm not too sure what it could be.
Any help would be appreciated!