Please help me important question involving the pill?

If you are wondering if the placebo "start your period" pills would interfere with another pill, they wouldn't. They're placebos, which don't really have anything in them. But as far as the period pains themselves go, if you've just starting taking the pills your period shouldn't continue. That might take a little while to kick in, but I'd call the doctor to make sure you could take a pain pill while taking the pill. If you can't get ahold of your doctor, I'd just kind of tough it out. Try using a heating pad, cutting down on caffeine and sodium, and many people swear that bananas help ease pain.