Hi, I had sex with my boyfriend three days before my period, we used a condom and it didn't break. I am not on birth control. Three days later I got my period. I've been feeling nauseous lately so I took a pregnancy test today and it came out negative. Today is the last day of my period. Is there any possibility I am pregnant. Should I take another pregnancy test in a week?
If you expected your period 3 days after you had sex AND your period was "normal" then you are not pregnant.
It is VERY unlikely that you'd get pregnant having sex within about 10 days BEFORE your period starts. The closer you are to when your period is expected to start the lower your fertility. The egg is not viable. Any sperm would not be viable by the time you ovulate.
Hope it helps.