That's the beauty of any birthcontrol/medication. If it doesn't work, you can always discontinue using it. If I find that the side effects are getting worse even months or years from now I'll deal with it, but I'll cross that bridge when I get to it. So far I'm glad I tried it.
The important thing is that you go into it knowing full well, that it might NOT work for you and if that's the case then you deal with it.