Hi, Welcome to Health care magic forum.
It appears that you are over anxious about the pregnancy
. If you go on caliculating the dates, the tension is increased, and there is possibility of missing it again and again.
I advise that both of you consult a doctor for infertility and get tested. You have to exclude the male infertility
Take more of green leafy vegetables, pulses, sprouts,and
protein rich foods to have pregnancy.
Wishing for a quick and complete recovery. Thank you.