We have a marriage function in our home, my wife date period is 28 of months + 1 or 2 days early or later, this time after 1 month crossed 4 days also but no period ,then she started taking primolut n ,first day ok ,second taking tablet is 12 mins late ,3 day taken correctly ,now evening times she is feeling lower abdomen pain, day time is ok ,we 4 more days to stop period ,so please advice what to do? Is that pain is normal?