I meant you will have a child by about 2018. Till then there could be some reasons which prevents an offspring being born, the reason no astrologer will be able to foresay. Your contention that Kethu in fifth sign causes miscarriage etc. are all half baked knowledge on the subject. Just the presence of planets in a sign being used for analysis of a horoscope is all for wayside astrologers who have no in depth knowledge about astrology. Read my articles on http://navagrahastro.blogspot.in/ which will give you some better insight into astrology.
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