Dear sir My wife is facing periods problem from past few months and also this month already completed 1month 20days still periods not happened so we both of thought may be will happen pregnant then we checked pregnancy test yesterday but there is also negative result. May be this kind of periods problem will be effect for future pregnancy please let me know. She got married with me 6 month before. Please help me on this issue. Because she looking for family plan but her periods is major problem. Kindly cooperate.