Hello Sir... Just Wanted To Share My Background History With

Hello sir... just wanted to share my background history with you. i had conceived last year in may 2015 and in august 2015 my pregnancy reports were not fine. According to the reports there was down syndrome of very high level and also the nasal bone was not present in the baby. So in august end i aborted the the baby as a normal pain delivery. now after 6 months i am planning again to conceive and had gone through all the tests like karyotying and other tests which doc suggested me and the result was fine. i am also taking normoz, consevel and folvitex. can you please guide me as to how will i conceive early and what precautions to be taken to conceive a healthy baby. Also kindly share with me the tips for health pregnancy as i am little worried due to last time experience???? Do i need to do intercourse every day during ovulation time or every alternative day? as far as my periods are concerned the dates for last 5 months are 30 oct, 27 nov, 24 dec, 27 jan, 24 feb & 24 mar. Are my periods on time? what is the best ovulation time that i have have intercourse to conceive early? kindly guide me thoroughly and i am little worried about my past.????