Take a breath. *breath* That really sucks.
The chances are unlikely that you are pregnant. I would think that there is more likelihood in these situations that you would get an SDI. You know this guy though; how his other relationships work, what he has done for protection in the past.... seems unlikely that he has anything to pass on. It's not like you picked someone up at a bar.
That is a highly unfortunate situation. It does happen however. Condoms fail also and there is risks there also... sex can be a risky business.
There is nothing really you can do except go and get tested a in a few weeks, check your period and make sure info is passed better next time...
Try not to be too anxious about it all. It likely will be fine.
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