Is there a good month in which the couples should try to conceive? Also, what if a female is pregnant during the month of Ramadhan? Should she be fasting? Also, can you please share any tips or books related to conceiving, pregnancy and child birth.

This book is very good and will answer many of your questions

https://www.al-islam.org/marriage-parenthood-heavenly-path

If the mother is in stages pregnancy and it’s Ramadan, and there is likely to be harm on her or the baby, she can break fast and re-do later.