Hi welcome to Health care magic forum.
Thanks for calling H.C.M.F.
pills tend to cause vomiting
sensation to some people, so long you did't have any such symptoms . 24 hour periods may be common with some people who are on contraceptives. Your body might not be cooperative with such changes.
Or the cause may be ovulation pain, or may be break through bleeding.
I advise you to consult a gynacologist for diagnosis and treatment. You may need to have a U.S.scaning for confermation of the condition.
I wish you a speedy recovery.