Well, I definitely think that you should get a test. This could have been implantation bleeding, even thou it seems a bit early for that, might have been caused by the stress you've put yourself in. I do think, however, that you are not pregnant, since you've mentioned that
1. He used a condom
2. He didn't cum inside of you
3. You've said that you were particularly dry that day, which indicated that ovulation had already passed for good. Which means that you weren't (very) fertile anymore (mucus is an indication of when you are ovulating, thus when you are most fertile. No mucus, no moist, not really fertile. Do not take this as a guideline thou, every woman is different and that is just how my body is.)
well, go and take that test finally! That really the only thing that will help you!
Good luck!