hello mrs rashmi, thnks fr trusting HCM doctors fr ur health related queries.. i guess ur concern is whether u require test tube baby or not???right???? well straight forward anzr-NO, not required i guess.. let discuss tis ..... 1.ur age is 36yrs....women from 18-40yrs are of reproductive age,where chances of pregnancy r very high,,,after 50yrs nil...42-45,transition zone where chances are not as high as reproductive grp or as less as 50yrs.. i hope u understood y am i stressing importance of being 36yrs old... 2.previously u had a son...that means inside ur reproductive system there are no anatomical problems so far... usually women dont get pregnant either bcz of problem in wife or husband or both of them... urs is ruled out to some extent.... so with tis info i guess fr u test tube is not necessary.. but,u havent shared info of ur husband age?how old is?wtz his exact age?? was it a late marriage fr him??so i cant comment exactly.... n i would like to focus u on term FERTILE PERIOD .it starts from 10th-16th day of menses cycle...during tis time ovulation occurs,ovum meets sperm n women get pregnant...so i insist u couples to have more episodes of sex during tis period.. with abv discussion u can try out my suggestions:- 1.have patience...dont put urself in unnecessary worries.. 2.try to do more episodes of sex in fertile period(scientific reazn told abv) for next 5-6 months..hopefully u get result by tis.. 3.if u are in a very much hurry to get baby u can visit ur nearby gynecologist or infertility specialist fr assisted reproductive technology-test tube baby.. i hope tis wz informative enough,helpful n useful fr ur query.. regards:dr.sudha rani panagar.. (i pray god u get blessed with cute baby as fast as possible,hopefully TWINS!!!!!)