Hello, My wife had her periods from 06-Aug-2010. But she got only few drops in the next month 06-Sep-2010. I am using condom all the times. But she has not had her period for this month (October) yet. We did the Pregnancy Test on 11-Oct-2010 and the result was NEGATIVE. We are worried why she is not getting her periods properly. Can you please advise?
This could be because of hormonal imbalance.  Go for thyroid test, prolactin level and FSH and LH tests. Go for USG to rule out PCs.  There are various causes for this so consult your doctor.