till when to wait?

Hi vaishali vishwakarma,

Thanks for your question. Here's some information that I was able to find on Diane-35 that may be helpful to you:
Tablets must be taken in the order directed on the package every day at about the same time with some liquid as needed. One active tablet is to be taken daily for 21 consecutive days. Each subsequent pack is started after a 7-day tablet-free interval or 7 day period of placebo tablets, during which time a withdrawal bleed usually occurs. This usually starts on day 2-3 after the last tablet and may not have finished before the next pack is started.

You should see some withdrawal bleeding (your period) soon. If you do not get it within the next couple of days make sure you call your doctor.

Best Wishes,

Rosa