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So having sex 3 or 4 days before you ovulate and on the day you ovulate will give you the best chances of getting pregnant. Michelle Stephens Hello, The last day of my period wasMay 16/17, I had unprotected sex on Jun 3rd, according the ovulation calendar I missed the window to get pregnant because my period I due on Jun13th.
How long after sex can you tell if your pregnant? im not sure but do you have to wait 2 weeks to take a pregnancy test? Update: but what if you weren't trying and it just kind of happened........ating Newest Oldest. Best Answer: You should wait at least 14-18 days after your period or better yet if you miss your period or are late then take a home pregnancy test (one like First Response or Clear Blue digital they are easier to read).