Here are few things to follow before conception:
1) change in your unhealthy lifestyle, elemenate smoking, drinking and junk food from your diet.
2) Do not take much stress, it reduces the chances to conceive
3) Include folic acid that is vitaminB, in your diet daily, it reduces chances of defects of brain and spine in baby.
4) Exercise daily, do yoga daily to make your intrnal organs strong
5) Reach and maintain a healthy weight