Open Question: What is Fertile Period to make intercourse for getting pregnant?

My wife’s periods started yesterday. What will be the ideal days to intercourse for getting pregnant? Will i have to take any special steps for it? I am a smoker and shall i have to stop it? My sperm analysis taken 3 months back is as follows:Volume: 2.5 ML
PH: 8.0
Reaction: Alkaline
Active Motile: 70%
Sluggish Motile: 10%
Non – Motile: 20%
Normal Sperms: 97%
Abnormal Sperms: 03%
Total Sperm Count: 99.5 million/ml
Others: 1-2 PUS CELLS/HPF.

Any Doctors please advise what are to be followed and what needs to be done?
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