Regulation?

I know it's probably a stupid question, but is there anything I can do to try and regulate my period? It's been about 16 months since I first got my period and it has never been regular! I know I probably just have to wait for it to become regular, but I was wondering if there's anything I can do to encourage it to become regular. I would much rather have a normal period that I can be prepared for than always be wondering when it's gonna show up. I hate wasting products just to be safe even if it skips months and is never predictable. Thanks!! :D