Magick is a hard work. If you want to see results in 10 days, you’ll probably won’t see them never.
I am waiting for my results from an year and a half already, and I am ready to wait for it for years, if it’s needed.
It depends on so many factors that nobody could tell you how much time will pass until your curse starts to work.
That doesn’t mean you should stop all your life, waiting for results and looking for some movements.
Actually the best it if you forget about the spell.
Don’t doubt your spell, assume that it’s already working.
And live your life.
If you feel you need to apply more curses, do it but have in mind that the target may have a protection, natural or magickal, and you should destroy it in order the curse to work.
You can summon spirit and ask him to destroy it.