Which mini pill are you on?
The desogestrel mini pill suppresses ovulation fully and the norethindrone mini pill suppresses ovulation for about 50% of users, however is still equally as effective for users who ovulate as for those who don’t.
As the side effects of the pill are very similar/the same as pregnancy symptoms, a positive pregnancy test is the only way to know for sure. If you’re using the pill correctly it’s working.