You can take all the three tablets. There are safe in pregnancy
is required throughout the pregnancy. Iron may be started in the second trimester. However, if you are anemic, it can be started even before you conceive.
Please seek the help of your gynecologist and know about the days of your ovulation. Having sexual intercourse on the days of your ovulation, increases the chances of conceiving greatly.
Make sure your routine blood investigations and your husbands' reports are normal.
All the best.