What the others said and I will only add, Why are you having unprotected sex with ANYONE! Are you crazy! Let this be a lesson to you.
But don't jump the gun. The comment of having morning sickness is premature as the vast majority of nausea associated with pregnancy starts when a woman is 6 weeks pregnant. To be honest----------- there is a chance but based on her claim of morning sickness and contacting you about it--------- I think she is playing a game with you. Wait until she follows up with you and then ask her to take a test with you present. While she could be pregnant and let this be a lesson to you------------ she may just be jerking your chain a little for dumping her. Or she could be a fatal attraction stalker. So------ pick your dates a little more wisely and realize that sleeping with someone isn't as casual as it seems. There can be big repercussions. Good luck
We were posting at the same time.
What AHP said.
Yes, if you had sex 2 weeks after her period started, she would have been the most fertile.
It's unlikely at this point that her test would show positive, and it's unlikely that she would be feeling any symptoms yet, but if you had unprotected sex around 14 days after her last period began, the chances are good that she's pregnant.
Anytime you have unprotected sex, there is a risk of pregnancy.
Based on the info you've given, she had her period three weeks ago, and she now believes she's pregnant?
It's likely she could be, and a test would likely have been negative last week and this week, as she is probably less than 10 days past ovulation. Did you have unprotected sex in approximately the last 14 days? If so, then yes, she could be pregnant and experiencing morning sickness but still too early to show a positive on a home pregnancy test.
If she tests next week, you will have more accurate results.